selftests: net: replace sleeps in fcnal-test with waits

fcnal-test.sh already includes lib.sh, use relevant helpers
instead of sleeping. Replace sleep after starting nettest
as a server with wait_local_port_listen.

Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20250909223837.863217-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/net/fcnal-test.sh b/tools/testing/selftests/net/fcnal-test.sh
index 69941520e8e5c6927d32e933892001140c66de95..0883da74ab7b0771b6bd8c8f6c793e7314170127 100755 (executable)
--- a/tools/testing/selftests/net/fcnal-test.sh
+++ b/tools/testing/selftests/net/fcnal-test.sh
@@ -875,7 +875,7 @@ ipv4_tcp_md5_novrf()
        # basic use case
        log_start
        run_cmd nettest -s -M ${MD5_PW} -m ${NSB_IP} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: Single address config"
 
@@ -883,7 +883,7 @@ ipv4_tcp_md5_novrf()
        log_start
        show_hint "Should timeout due to MD5 mismatch"
        run_cmd nettest -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 2 "MD5: Server no config, client uses password"
 
@@ -891,7 +891,7 @@ ipv4_tcp_md5_novrf()
        log_start
        show_hint "Should timeout since client uses wrong password"
        run_cmd nettest -s -M ${MD5_PW} -m ${NSB_IP} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: Client uses wrong password"
 
@@ -899,7 +899,7 @@ ipv4_tcp_md5_novrf()
        log_start
        show_hint "Should timeout due to MD5 mismatch"
        run_cmd nettest -s -M ${MD5_PW} -m ${NSB_LO_IP} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 2 "MD5: Client address does not match address configured with password"
 
@@ -910,7 +910,7 @@ ipv4_tcp_md5_novrf()
        # client in prefix
        log_start
        run_cmd nettest -s -M ${MD5_PW} -m ${NS_NET} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest  -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: Prefix config"
 
@@ -918,7 +918,7 @@ ipv4_tcp_md5_novrf()
        log_start
        show_hint "Should timeout since client uses wrong password"
        run_cmd nettest -s -M ${MD5_PW} -m ${NS_NET} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: Prefix config, client uses wrong password"
 
@@ -926,7 +926,7 @@ ipv4_tcp_md5_novrf()
        log_start
        show_hint "Should timeout due to MD5 mismatch"
        run_cmd nettest -s -M ${MD5_PW} -m ${NS_NET} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -c ${NSB_LO_IP} -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 2 "MD5: Prefix config, client address not in configured prefix"
 }
@@ -943,7 +943,7 @@ ipv4_tcp_md5()
        # basic use case
        log_start
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Single address config"
 
@@ -951,7 +951,7 @@ ipv4_tcp_md5()
        log_start
        show_hint "Should timeout since server does not have MD5 auth"
        run_cmd nettest -s -I ${VRF} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Server no config, client uses password"
 
@@ -959,7 +959,7 @@ ipv4_tcp_md5()
        log_start
        show_hint "Should timeout since client uses wrong password"
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: VRF: Client uses wrong password"
 
@@ -967,7 +967,7 @@ ipv4_tcp_md5()
        log_start
        show_hint "Should timeout since server config differs from client"
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NSB_LO_IP} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Client address does not match address configured with password"
 
@@ -978,7 +978,7 @@ ipv4_tcp_md5()
        # client in prefix
        log_start
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest  -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Prefix config"
 
@@ -986,7 +986,7 @@ ipv4_tcp_md5()
        log_start
        show_hint "Should timeout since client uses wrong password"
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: VRF: Prefix config, client uses wrong password"
 
@@ -994,7 +994,7 @@ ipv4_tcp_md5()
        log_start
        show_hint "Should timeout since client address is outside of prefix"
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -c ${NSB_LO_IP} -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Prefix config, client address not in configured prefix"
 
@@ -1005,14 +1005,14 @@ ipv4_tcp_md5()
        log_start
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP} &
        run_cmd nettest -s -M ${MD5_WRONG_PW} -m ${NSB_IP} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest  -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Single address config in default VRF and VRF, conn in VRF"
 
        log_start
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP} &
        run_cmd nettest -s -M ${MD5_WRONG_PW} -m ${NSB_IP} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsc nettest  -r ${NSA_IP} -X ${MD5_WRONG_PW}
        log_test $? 0 "MD5: VRF: Single address config in default VRF and VRF, conn in default VRF"
 
@@ -1020,7 +1020,7 @@ ipv4_tcp_md5()
        show_hint "Should timeout since client in default VRF uses VRF password"
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP} &
        run_cmd nettest -s -M ${MD5_WRONG_PW} -m ${NSB_IP} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsc nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Single address config in default VRF and VRF, conn in default VRF with VRF pw"
 
@@ -1028,21 +1028,21 @@ ipv4_tcp_md5()
        show_hint "Should timeout since client in VRF uses default VRF password"
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP} &
        run_cmd nettest -s -M ${MD5_WRONG_PW} -m ${NSB_IP} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: VRF: Single address config in default VRF and VRF, conn in VRF with default VRF pw"
 
        log_start
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET} &
        run_cmd nettest -s -M ${MD5_WRONG_PW} -m ${NS_NET} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest  -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Prefix config in default VRF and VRF, conn in VRF"
 
        log_start
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET} &
        run_cmd nettest -s -M ${MD5_WRONG_PW} -m ${NS_NET} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsc nettest  -r ${NSA_IP} -X ${MD5_WRONG_PW}
        log_test $? 0 "MD5: VRF: Prefix config in default VRF and VRF, conn in default VRF"
 
@@ -1050,7 +1050,7 @@ ipv4_tcp_md5()
        show_hint "Should timeout since client in default VRF uses VRF password"
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET} &
        run_cmd nettest -s -M ${MD5_WRONG_PW} -m ${NS_NET} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsc nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Prefix config in default VRF and VRF, conn in default VRF with VRF pw"
 
@@ -1058,7 +1058,7 @@ ipv4_tcp_md5()
        show_hint "Should timeout since client in VRF uses default VRF password"
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET} &
        run_cmd nettest -s -M ${MD5_WRONG_PW} -m ${NS_NET} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: VRF: Prefix config in default VRF and VRF, conn in VRF with default VRF pw"
 
@@ -1082,14 +1082,14 @@ test_ipv4_md5_vrf__vrf_server__no_bind_ifindex()
        log_start
        show_hint "Simulates applications using VRF without TCP_MD5SIG_FLAG_IFINDEX"
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET} --no-bind-key-ifindex &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: VRF-bound server, unbound key accepts connection"
 
        log_start
        show_hint "Binding both the socket and the key is not required but it works"
        run_cmd nettest -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET} --force-bind-key-ifindex &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: VRF-bound server, bound key accepts connection"
 }
@@ -1103,25 +1103,25 @@ test_ipv4_md5_vrf__global_server__bind_ifindex0()
 
        log_start
        run_cmd nettest -s -M ${MD5_PW} -m ${NS_NET} --force-bind-key-ifindex &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Global server, Key bound to ifindex=0 rejects VRF connection"
 
        log_start
        run_cmd nettest -s -M ${MD5_PW} -m ${NS_NET} --force-bind-key-ifindex &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsc nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Global server, key bound to ifindex=0 accepts non-VRF connection"
        log_start
 
        run_cmd nettest -s -M ${MD5_PW} -m ${NS_NET} --no-bind-key-ifindex &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Global server, key not bound to ifindex accepts VRF connection"
 
        log_start
        run_cmd nettest -s -M ${MD5_PW} -m ${NS_NET} --no-bind-key-ifindex &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsc nettest -r ${NSA_IP} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Global server, key not bound to ifindex accepts non-VRF connection"
 
@@ -1193,7 +1193,7 @@ ipv4_tcp_novrf()
        do
                log_start
                run_cmd nettest -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -r ${a}
                log_test_addr ${a} $? 0 "Global server"
        done
@@ -1201,7 +1201,7 @@ ipv4_tcp_novrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -s -I ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${a}
        log_test_addr ${a} $? 0 "Device server"
 
@@ -1221,13 +1221,13 @@ ipv4_tcp_novrf()
        do
                log_start
                run_cmd_nsb nettest -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 tcp
                run_cmd nettest -r ${a} -0 ${NSA_IP}
                log_test_addr ${a} $? 0 "Client"
 
                log_start
                run_cmd_nsb nettest -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 tcp
                run_cmd nettest -r ${a} -d ${NSA_DEV}
                log_test_addr ${a} $? 0 "Client, device bind"
 
@@ -1249,7 +1249,7 @@ ipv4_tcp_novrf()
        do
                log_start
                run_cmd nettest -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -r ${a} -0 ${a} -1 ${a}
                log_test_addr ${a} $? 0 "Global server, local connection"
        done
@@ -1257,7 +1257,7 @@ ipv4_tcp_novrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -s -I ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -r ${a} -0 ${a}
        log_test_addr ${a} $? 0 "Device server, unbound client, local connection"
 
@@ -1266,7 +1266,7 @@ ipv4_tcp_novrf()
                log_start
                show_hint "Should fail 'Connection refused' since addresses on loopback are out of device scope"
                run_cmd nettest -s -I ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -r ${a}
                log_test_addr ${a} $? 1 "Device server, unbound client, local connection"
        done
@@ -1274,7 +1274,7 @@ ipv4_tcp_novrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -r ${a} -0 ${a} -d ${NSA_DEV}
        log_test_addr ${a} $? 0 "Global server, device client, local connection"
 
@@ -1283,7 +1283,7 @@ ipv4_tcp_novrf()
                log_start
                show_hint "Should fail 'No route to host' since addresses on loopback are out of device scope"
                run_cmd nettest -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -r ${a} -d ${NSA_DEV}
                log_test_addr ${a} $? 1 "Global server, device client, local connection"
        done
@@ -1291,7 +1291,7 @@ ipv4_tcp_novrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest  -d ${NSA_DEV} -r ${a} -0 ${a}
        log_test_addr ${a} $? 0 "Device server, device client, local connection"
 
@@ -1323,19 +1323,19 @@ ipv4_tcp_vrf()
                log_start
                show_hint "Should fail 'Connection refused' since global server with VRF is disabled"
                run_cmd nettest -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -r ${a}
                log_test_addr ${a} $? 1 "Global server"
 
                log_start
                run_cmd nettest -s -I ${VRF} -3 ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -r ${a}
                log_test_addr ${a} $? 0 "VRF server"
 
                log_start
                run_cmd nettest -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -r ${a}
                log_test_addr ${a} $? 0 "Device server"
 
@@ -1352,7 +1352,7 @@ ipv4_tcp_vrf()
        log_start
        show_hint "Should fail 'Connection refused' since global server with VRF is disabled"
        run_cmd nettest -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -r ${a} -d ${NSA_DEV}
        log_test_addr ${a} $? 1 "Global server, local connection"
 
@@ -1374,14 +1374,14 @@ ipv4_tcp_vrf()
                log_start
                show_hint "client socket should be bound to VRF"
                run_cmd nettest -s -3 ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -r ${a}
                log_test_addr ${a} $? 0 "Global server"
 
                log_start
                show_hint "client socket should be bound to VRF"
                run_cmd nettest -s -I ${VRF} -3 ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -r ${a}
                log_test_addr ${a} $? 0 "VRF server"
 
@@ -1396,7 +1396,7 @@ ipv4_tcp_vrf()
        log_start
        show_hint "client socket should be bound to device"
        run_cmd nettest -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -r ${a}
        log_test_addr ${a} $? 0 "Device server"
 
@@ -1406,7 +1406,7 @@ ipv4_tcp_vrf()
                log_start
                show_hint "Should fail 'Connection refused' since client is not bound to VRF"
                run_cmd nettest -s -I ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -r ${a}
                log_test_addr ${a} $? 1 "Global server, local connection"
        done
@@ -1418,13 +1418,13 @@ ipv4_tcp_vrf()
        do
                log_start
                run_cmd_nsb nettest -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 tcp
                run_cmd nettest -r ${a} -d ${VRF}
                log_test_addr ${a} $? 0 "Client, VRF bind"
 
                log_start
                run_cmd_nsb nettest -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 tcp
                run_cmd nettest -r ${a} -d ${NSA_DEV}
                log_test_addr ${a} $? 0 "Client, device bind"
 
@@ -1443,7 +1443,7 @@ ipv4_tcp_vrf()
        do
                log_start
                run_cmd nettest -s -I ${VRF} -3 ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -r ${a} -d ${VRF} -0 ${a}
                log_test_addr ${a} $? 0 "VRF server, VRF client, local connection"
        done
@@ -1451,26 +1451,26 @@ ipv4_tcp_vrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -s -I ${VRF} -3 ${VRF} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -r ${a} -d ${NSA_DEV} -0 ${a}
        log_test_addr ${a} $? 0 "VRF server, device client, local connection"
 
        log_start
        show_hint "Should fail 'No route to host' since client is out of VRF scope"
        run_cmd nettest -s -I ${VRF} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -r ${a}
        log_test_addr ${a} $? 1 "VRF server, unbound client, local connection"
 
        log_start
        run_cmd nettest -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -r ${a} -d ${VRF} -0 ${a}
        log_test_addr ${a} $? 0 "Device server, VRF client, local connection"
 
        log_start
        run_cmd nettest -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -r ${a} -d ${NSA_DEV} -0 ${a}
        log_test_addr ${a} $? 0 "Device server, device client, local connection"
 }
@@ -1509,7 +1509,7 @@ ipv4_udp_novrf()
        do
                log_start
                run_cmd nettest -D -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -D -r ${a}
                log_test_addr ${a} $? 0 "Global server"
 
@@ -1522,7 +1522,7 @@ ipv4_udp_novrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd_nsb nettest -D -r ${a}
        log_test_addr ${a} $? 0 "Device server"
 
@@ -1533,31 +1533,31 @@ ipv4_udp_novrf()
        do
                log_start
                run_cmd_nsb nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 udp
                run_cmd nettest -D -r ${a} -0 ${NSA_IP}
                log_test_addr ${a} $? 0 "Client"
 
                log_start
                run_cmd_nsb nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 udp
                run_cmd nettest -D -r ${a} -d ${NSA_DEV} -0 ${NSA_IP}
                log_test_addr ${a} $? 0 "Client, device bind"
 
                log_start
                run_cmd_nsb nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 udp
                run_cmd nettest -D -r ${a} -d ${NSA_DEV} -C -0 ${NSA_IP}
                log_test_addr ${a} $? 0 "Client, device send via cmsg"
 
                log_start
                run_cmd_nsb nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 udp
                run_cmd nettest -D -r ${a} -d ${NSA_DEV} -S -0 ${NSA_IP}
                log_test_addr ${a} $? 0 "Client, device bind via IP_UNICAST_IF"
 
                log_start
                run_cmd_nsb nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 udp
                run_cmd nettest -D -r ${a} -d ${NSA_DEV} -S -0 ${NSA_IP} -U
                log_test_addr ${a} $? 0 "Client, device bind via IP_UNICAST_IF, with connect()"
 
@@ -1580,7 +1580,7 @@ ipv4_udp_novrf()
        do
                log_start
                run_cmd nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -D -r ${a} -0 ${a} -1 ${a}
                log_test_addr ${a} $? 0 "Global server, local connection"
        done
@@ -1588,7 +1588,7 @@ ipv4_udp_novrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -s -D -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -r ${a}
        log_test_addr ${a} $? 0 "Device server, unbound client, local connection"
 
@@ -1597,7 +1597,7 @@ ipv4_udp_novrf()
                log_start
                show_hint "Should fail 'Connection refused' since address is out of device scope"
                run_cmd nettest -s -D -I ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -D -r ${a}
                log_test_addr ${a} $? 1 "Device server, unbound client, local connection"
        done
@@ -1605,25 +1605,25 @@ ipv4_udp_novrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -s -D &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "Global server, device client, local connection"
 
        log_start
        run_cmd nettest -s -D &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${NSA_DEV} -C -r ${a}
        log_test_addr ${a} $? 0 "Global server, device send via cmsg, local connection"
 
        log_start
        run_cmd nettest -s -D &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${NSA_DEV} -S -r ${a}
        log_test_addr ${a} $? 0 "Global server, device client via IP_UNICAST_IF, local connection"
 
        log_start
        run_cmd nettest -s -D &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${NSA_DEV} -S -r ${a} -U
        log_test_addr ${a} $? 0 "Global server, device client via IP_UNICAST_IF, local connection, with connect()"
 
@@ -1636,28 +1636,28 @@ ipv4_udp_novrf()
                log_start
                show_hint "Should fail since addresses on loopback are out of device scope"
                run_cmd nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -D -r ${a} -d ${NSA_DEV}
                log_test_addr ${a} $? 2 "Global server, device client, local connection"
 
                log_start
                show_hint "Should fail since addresses on loopback are out of device scope"
                run_cmd nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -D -r ${a} -d ${NSA_DEV} -C
                log_test_addr ${a} $? 1 "Global server, device send via cmsg, local connection"
 
                log_start
                show_hint "Should fail since addresses on loopback are out of device scope"
                run_cmd nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -D -r ${a} -d ${NSA_DEV} -S
                log_test_addr ${a} $? 1 "Global server, device client via IP_UNICAST_IF, local connection"
 
                log_start
                show_hint "Should fail since addresses on loopback are out of device scope"
                run_cmd nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -D -r ${a} -d ${NSA_DEV} -S -U
                log_test_addr ${a} $? 1 "Global server, device client via IP_UNICAST_IF, local connection, with connect()"
 
@@ -1667,7 +1667,7 @@ ipv4_udp_novrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -D -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${NSA_DEV} -r ${a} -0 ${a}
        log_test_addr ${a} $? 0 "Device server, device client, local conn"
 
@@ -1709,19 +1709,19 @@ ipv4_udp_vrf()
                log_start
                show_hint "Fails because ingress is in a VRF and global server is disabled"
                run_cmd nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -D -r ${a}
                log_test_addr ${a} $? 1 "Global server"
 
                log_start
                run_cmd nettest -D -I ${VRF} -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -D -r ${a}
                log_test_addr ${a} $? 0 "VRF server"
 
                log_start
                run_cmd nettest -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -D -r ${a}
                log_test_addr ${a} $? 0 "Enslaved device server"
 
@@ -1733,7 +1733,7 @@ ipv4_udp_vrf()
                log_start
                show_hint "Should fail 'Connection refused' since global server is out of scope"
                run_cmd nettest -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -D -d ${VRF} -r ${a}
                log_test_addr ${a} $? 1 "Global server, VRF client, local connection"
        done
@@ -1741,26 +1741,26 @@ ipv4_udp_vrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -s -D -I ${VRF} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "VRF server, VRF client, local conn"
 
        log_start
        run_cmd nettest -s -D -I ${VRF} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "VRF server, enslaved device client, local connection"
 
        a=${NSA_IP}
        log_start
        run_cmd nettest -s -D -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "Enslaved device server, VRF client, local conn"
 
        log_start
        run_cmd nettest -s -D -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "Enslaved device server, device client, local conn"
 
@@ -1775,19 +1775,19 @@ ipv4_udp_vrf()
        do
                log_start
                run_cmd nettest -D -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -D -r ${a}
                log_test_addr ${a} $? 0 "Global server"
 
                log_start
                run_cmd nettest -D -I ${VRF} -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -D -r ${a}
                log_test_addr ${a} $? 0 "VRF server"
 
                log_start
                run_cmd nettest -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -D -r ${a}
                log_test_addr ${a} $? 0 "Enslaved device server"
 
@@ -1802,13 +1802,13 @@ ipv4_udp_vrf()
        #
        log_start
        run_cmd_nsb nettest -D -s &
-       sleep 1
+       wait_local_port_listen ${NSB} 12345 udp
        run_cmd nettest -d ${VRF} -D -r ${NSB_IP} -1 ${NSA_IP}
        log_test $? 0 "VRF client"
 
        log_start
        run_cmd_nsb nettest -D -s &
-       sleep 1
+       wait_local_port_listen ${NSB} 12345 udp
        run_cmd nettest -d ${NSA_DEV} -D -r ${NSB_IP} -1 ${NSA_IP}
        log_test $? 0 "Enslaved device client"
 
@@ -1829,31 +1829,31 @@ ipv4_udp_vrf()
        a=${NSA_IP}
        log_start
        run_cmd nettest -D -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "Global server, VRF client, local conn"
 
        log_start
        run_cmd nettest -s -D -I ${VRF} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "VRF server, VRF client, local conn"
 
        log_start
        run_cmd nettest -s -D -I ${VRF} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "VRF server, device client, local conn"
 
        log_start
        run_cmd nettest -s -D -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "Enslaved device server, VRF client, local conn"
 
        log_start
        run_cmd nettest -s -D -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "Enslaved device server, device client, local conn"
 
@@ -1861,7 +1861,7 @@ ipv4_udp_vrf()
        do
                log_start
                run_cmd nettest -D -s -3 ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -D -d ${VRF} -r ${a}
                log_test_addr ${a} $? 0 "Global server, VRF client, local conn"
        done
@@ -1870,7 +1870,7 @@ ipv4_udp_vrf()
        do
                log_start
                run_cmd nettest -s -D -I ${VRF} -3 ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -D -d ${VRF} -r ${a}
                log_test_addr ${a} $? 0 "VRF server, VRF client, local conn"
        done
@@ -2093,7 +2093,7 @@ ipv4_rt()
        do
                log_start
                run_cmd nettest ${varg} -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest ${varg} -r ${a} &
                sleep 3
                run_cmd ip link del ${VRF}
@@ -2107,7 +2107,7 @@ ipv4_rt()
        do
                log_start
                run_cmd nettest ${varg} -s -I ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest ${varg} -r ${a} &
                sleep 3
                run_cmd ip link del ${VRF}
@@ -2120,7 +2120,7 @@ ipv4_rt()
        a=${NSA_IP}
        log_start
        run_cmd nettest ${varg} -s -I ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest ${varg} -r ${a} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -2134,7 +2134,7 @@ ipv4_rt()
        #
        log_start
        run_cmd_nsb nettest ${varg} -s &
-       sleep 1
+       wait_local_port_listen ${NSB} 12345 tcp
        run_cmd nettest ${varg} -d ${VRF} -r ${NSB_IP} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -2145,7 +2145,7 @@ ipv4_rt()
 
        log_start
        run_cmd_nsb nettest ${varg} -s &
-       sleep 1
+       wait_local_port_listen ${NSB} 12345 tcp
        run_cmd nettest ${varg} -d ${NSA_DEV} -r ${NSB_IP} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -2161,7 +2161,7 @@ ipv4_rt()
        do
                log_start
                run_cmd nettest ${varg} -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest ${varg} -d ${VRF} -r ${a} &
                sleep 3
                run_cmd ip link del ${VRF}
@@ -2175,7 +2175,7 @@ ipv4_rt()
        do
                log_start
                run_cmd nettest ${varg} -I ${VRF} -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest ${varg} -d ${VRF} -r ${a} &
                sleep 3
                run_cmd ip link del ${VRF}
@@ -2189,7 +2189,7 @@ ipv4_rt()
        log_start
 
        run_cmd nettest ${varg} -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest ${varg} -d ${NSA_DEV} -r ${a} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -2200,7 +2200,7 @@ ipv4_rt()
 
        log_start
        run_cmd nettest ${varg} -I ${VRF} -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest ${varg} -d ${NSA_DEV} -r ${a} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -2211,7 +2211,7 @@ ipv4_rt()
 
        log_start
        run_cmd nettest ${varg} -I ${NSA_DEV} -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest ${varg} -d ${NSA_DEV} -r ${a} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -2561,7 +2561,7 @@ ipv6_tcp_md5_novrf()
        # basic use case
        log_start
        run_cmd nettest -6 -s -M ${MD5_PW} -m ${NSB_IP6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 0 "MD5: Single address config"
 
@@ -2569,7 +2569,7 @@ ipv6_tcp_md5_novrf()
        log_start
        show_hint "Should timeout due to MD5 mismatch"
        run_cmd nettest -6 -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 2 "MD5: Server no config, client uses password"
 
@@ -2577,7 +2577,7 @@ ipv6_tcp_md5_novrf()
        log_start
        show_hint "Should timeout since client uses wrong password"
        run_cmd nettest -6 -s -M ${MD5_PW} -m ${NSB_IP6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: Client uses wrong password"
 
@@ -2585,7 +2585,7 @@ ipv6_tcp_md5_novrf()
        log_start
        show_hint "Should timeout due to MD5 mismatch"
        run_cmd nettest -6 -s -M ${MD5_PW} -m ${NSB_LO_IP6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 2 "MD5: Client address does not match address configured with password"
 
@@ -2596,7 +2596,7 @@ ipv6_tcp_md5_novrf()
        # client in prefix
        log_start
        run_cmd nettest -6 -s -M ${MD5_PW} -m ${NS_NET6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 0 "MD5: Prefix config"
 
@@ -2604,7 +2604,7 @@ ipv6_tcp_md5_novrf()
        log_start
        show_hint "Should timeout since client uses wrong password"
        run_cmd nettest -6 -s -M ${MD5_PW} -m ${NS_NET6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: Prefix config, client uses wrong password"
 
@@ -2612,7 +2612,7 @@ ipv6_tcp_md5_novrf()
        log_start
        show_hint "Should timeout due to MD5 mismatch"
        run_cmd nettest -6 -s -M ${MD5_PW} -m ${NS_NET6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -c ${NSB_LO_IP6} -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 2 "MD5: Prefix config, client address not in configured prefix"
 }
@@ -2629,7 +2629,7 @@ ipv6_tcp_md5()
        # basic use case
        log_start
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Single address config"
 
@@ -2637,7 +2637,7 @@ ipv6_tcp_md5()
        log_start
        show_hint "Should timeout since server does not have MD5 auth"
        run_cmd nettest -6 -s -I ${VRF} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Server no config, client uses password"
 
@@ -2645,7 +2645,7 @@ ipv6_tcp_md5()
        log_start
        show_hint "Should timeout since client uses wrong password"
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: VRF: Client uses wrong password"
 
@@ -2653,7 +2653,7 @@ ipv6_tcp_md5()
        log_start
        show_hint "Should timeout since server config differs from client"
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NSB_LO_IP6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Client address does not match address configured with password"
 
@@ -2664,7 +2664,7 @@ ipv6_tcp_md5()
        # client in prefix
        log_start
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Prefix config"
 
@@ -2672,7 +2672,7 @@ ipv6_tcp_md5()
        log_start
        show_hint "Should timeout since client uses wrong password"
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: VRF: Prefix config, client uses wrong password"
 
@@ -2680,7 +2680,7 @@ ipv6_tcp_md5()
        log_start
        show_hint "Should timeout since client address is outside of prefix"
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -c ${NSB_LO_IP6} -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Prefix config, client address not in configured prefix"
 
@@ -2691,14 +2691,14 @@ ipv6_tcp_md5()
        log_start
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP6} &
        run_cmd nettest -6 -s -M ${MD5_WRONG_PW} -m ${NSB_IP6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Single address config in default VRF and VRF, conn in VRF"
 
        log_start
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP6} &
        run_cmd nettest -6 -s -M ${MD5_WRONG_PW} -m ${NSB_IP6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsc nettest -6 -r ${NSA_IP6} -X ${MD5_WRONG_PW}
        log_test $? 0 "MD5: VRF: Single address config in default VRF and VRF, conn in default VRF"
 
@@ -2706,7 +2706,7 @@ ipv6_tcp_md5()
        show_hint "Should timeout since client in default VRF uses VRF password"
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP6} &
        run_cmd nettest -6 -s -M ${MD5_WRONG_PW} -m ${NSB_IP6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsc nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Single address config in default VRF and VRF, conn in default VRF with VRF pw"
 
@@ -2714,21 +2714,21 @@ ipv6_tcp_md5()
        show_hint "Should timeout since client in VRF uses default VRF password"
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NSB_IP6} &
        run_cmd nettest -6 -s -M ${MD5_WRONG_PW} -m ${NSB_IP6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: VRF: Single address config in default VRF and VRF, conn in VRF with default VRF pw"
 
        log_start
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET6} &
        run_cmd nettest -6 -s -M ${MD5_WRONG_PW} -m ${NS_NET6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 0 "MD5: VRF: Prefix config in default VRF and VRF, conn in VRF"
 
        log_start
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET6} &
        run_cmd nettest -6 -s -M ${MD5_WRONG_PW} -m ${NS_NET6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsc nettest -6 -r ${NSA_IP6} -X ${MD5_WRONG_PW}
        log_test $? 0 "MD5: VRF: Prefix config in default VRF and VRF, conn in default VRF"
 
@@ -2736,7 +2736,7 @@ ipv6_tcp_md5()
        show_hint "Should timeout since client in default VRF uses VRF password"
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET6} &
        run_cmd nettest -6 -s -M ${MD5_WRONG_PW} -m ${NS_NET6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsc nettest -6 -r ${NSA_IP6} -X ${MD5_PW}
        log_test $? 2 "MD5: VRF: Prefix config in default VRF and VRF, conn in default VRF with VRF pw"
 
@@ -2744,7 +2744,7 @@ ipv6_tcp_md5()
        show_hint "Should timeout since client in VRF uses default VRF password"
        run_cmd nettest -6 -s -I ${VRF} -M ${MD5_PW} -m ${NS_NET6} &
        run_cmd nettest -6 -s -M ${MD5_WRONG_PW} -m ${NS_NET6} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${NSA_IP6} -X ${MD5_WRONG_PW}
        log_test $? 2 "MD5: VRF: Prefix config in default VRF and VRF, conn in VRF with default VRF pw"
 
@@ -2772,7 +2772,7 @@ ipv6_tcp_novrf()
        do
                log_start
                run_cmd nettest -6 -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -6 -r ${a}
                log_test_addr ${a} $? 0 "Global server"
        done
@@ -2793,7 +2793,7 @@ ipv6_tcp_novrf()
        do
                log_start
                run_cmd_nsb nettest -6 -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 tcp
                run_cmd nettest -6 -r ${a}
                log_test_addr ${a} $? 0 "Client"
        done
@@ -2802,7 +2802,7 @@ ipv6_tcp_novrf()
        do
                log_start
                run_cmd_nsb nettest -6 -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 tcp
                run_cmd nettest -6 -r ${a} -d ${NSA_DEV}
                log_test_addr ${a} $? 0 "Client, device bind"
        done
@@ -2822,7 +2822,7 @@ ipv6_tcp_novrf()
        do
                log_start
                run_cmd nettest -6 -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -6 -r ${a}
                log_test_addr ${a} $? 0 "Global server, local connection"
        done
@@ -2830,7 +2830,7 @@ ipv6_tcp_novrf()
        a=${NSA_IP6}
        log_start
        run_cmd nettest -6 -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -6 -r ${a} -0 ${a}
        log_test_addr ${a} $? 0 "Device server, unbound client, local connection"
 
@@ -2839,7 +2839,7 @@ ipv6_tcp_novrf()
                log_start
                show_hint "Should fail 'Connection refused' since addresses on loopback are out of device scope"
                run_cmd nettest -6 -s -I ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -6 -r ${a}
                log_test_addr ${a} $? 1 "Device server, unbound client, local connection"
        done
@@ -2847,7 +2847,7 @@ ipv6_tcp_novrf()
        a=${NSA_IP6}
        log_start
        run_cmd nettest -6 -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -6 -r ${a} -d ${NSA_DEV} -0 ${a}
        log_test_addr ${a} $? 0 "Global server, device client, local connection"
 
@@ -2856,7 +2856,7 @@ ipv6_tcp_novrf()
                log_start
                show_hint "Should fail 'Connection refused' since addresses on loopback are out of device scope"
                run_cmd nettest -6 -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -6 -r ${a} -d ${NSA_DEV}
                log_test_addr ${a} $? 1 "Global server, device client, local connection"
        done
@@ -2865,7 +2865,7 @@ ipv6_tcp_novrf()
        do
                log_start
                run_cmd nettest -6 -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -6  -d ${NSA_DEV} -r ${a}
                log_test_addr ${a} $? 0 "Device server, device client, local conn"
        done
@@ -2898,7 +2898,7 @@ ipv6_tcp_vrf()
                log_start
                show_hint "Should fail 'Connection refused' since global server with VRF is disabled"
                run_cmd nettest -6 -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -6 -r ${a}
                log_test_addr ${a} $? 1 "Global server"
        done
@@ -2907,7 +2907,7 @@ ipv6_tcp_vrf()
        do
                log_start
                run_cmd nettest -6 -s -I ${VRF} -3 ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -6 -r ${a}
                log_test_addr ${a} $? 0 "VRF server"
        done
@@ -2916,7 +2916,7 @@ ipv6_tcp_vrf()
        a=${NSA_LINKIP6}%${NSB_DEV}
        log_start
        run_cmd nettest -6 -s -I ${VRF} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${a}
        log_test_addr ${a} $? 0 "VRF server"
 
@@ -2924,7 +2924,7 @@ ipv6_tcp_vrf()
        do
                log_start
                run_cmd nettest -6 -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -6 -r ${a}
                log_test_addr ${a} $? 0 "Device server"
        done
@@ -2943,7 +2943,7 @@ ipv6_tcp_vrf()
        log_start
        show_hint "Should fail 'Connection refused' since global server with VRF is disabled"
        run_cmd nettest -6 -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -6 -r ${a} -d ${NSA_DEV}
        log_test_addr ${a} $? 1 "Global server, local connection"
 
@@ -2964,7 +2964,7 @@ ipv6_tcp_vrf()
        do
                log_start
                run_cmd nettest -6 -s -3 ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -6 -r ${a}
                log_test_addr ${a} $? 0 "Global server"
        done
@@ -2973,7 +2973,7 @@ ipv6_tcp_vrf()
        do
                log_start
                run_cmd nettest -6 -s -I ${VRF} -3 ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -6 -r ${a}
                log_test_addr ${a} $? 0 "VRF server"
        done
@@ -2982,13 +2982,13 @@ ipv6_tcp_vrf()
        a=${NSA_LINKIP6}%${NSB_DEV}
        log_start
        run_cmd nettest -6 -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${a}
        log_test_addr ${a} $? 0 "Global server"
 
        log_start
        run_cmd nettest -6 -s -I ${VRF} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd_nsb nettest -6 -r ${a}
        log_test_addr ${a} $? 0 "VRF server"
 
@@ -2996,7 +2996,7 @@ ipv6_tcp_vrf()
        do
                log_start
                run_cmd nettest -6 -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -6 -r ${a}
                log_test_addr ${a} $? 0 "Device server"
        done
@@ -3016,7 +3016,7 @@ ipv6_tcp_vrf()
                log_start
                show_hint "Fails 'Connection refused' since client is not in VRF"
                run_cmd nettest -6 -s -I ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -6 -r ${a}
                log_test_addr ${a} $? 1 "Global server, local connection"
        done
@@ -3029,7 +3029,7 @@ ipv6_tcp_vrf()
        do
                log_start
                run_cmd_nsb nettest -6 -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 tcp
                run_cmd nettest -6 -r ${a} -d ${VRF}
                log_test_addr ${a} $? 0 "Client, VRF bind"
        done
@@ -3038,7 +3038,7 @@ ipv6_tcp_vrf()
        log_start
        show_hint "Fails since VRF device does not allow linklocal addresses"
        run_cmd_nsb nettest -6 -s &
-       sleep 1
+       wait_local_port_listen ${NSB} 12345 tcp
        run_cmd nettest -6 -r ${a} -d ${VRF}
        log_test_addr ${a} $? 1 "Client, VRF bind"
 
@@ -3046,7 +3046,7 @@ ipv6_tcp_vrf()
        do
                log_start
                run_cmd_nsb nettest -6 -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 tcp
                run_cmd nettest -6 -r ${a} -d ${NSA_DEV}
                log_test_addr ${a} $? 0 "Client, device bind"
        done
@@ -3071,7 +3071,7 @@ ipv6_tcp_vrf()
        do
                log_start
                run_cmd nettest -6 -s -I ${VRF} -3 ${VRF} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -6 -r ${a} -d ${VRF} -0 ${a}
                log_test_addr ${a} $? 0 "VRF server, VRF client, local connection"
        done
@@ -3079,7 +3079,7 @@ ipv6_tcp_vrf()
        a=${NSA_IP6}
        log_start
        run_cmd nettest -6 -s -I ${VRF} -3 ${VRF} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -6 -r ${a} -d ${NSA_DEV} -0 ${a}
        log_test_addr ${a} $? 0 "VRF server, device client, local connection"
 
@@ -3087,13 +3087,13 @@ ipv6_tcp_vrf()
        log_start
        show_hint "Should fail since unbound client is out of VRF scope"
        run_cmd nettest -6 -s -I ${VRF} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -6 -r ${a}
        log_test_addr ${a} $? 1 "VRF server, unbound client, local connection"
 
        log_start
        run_cmd nettest -6 -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest -6 -r ${a} -d ${VRF} -0 ${a}
        log_test_addr ${a} $? 0 "Device server, VRF client, local connection"
 
@@ -3101,7 +3101,7 @@ ipv6_tcp_vrf()
        do
                log_start
                run_cmd nettest -6 -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest -6 -r ${a} -d ${NSA_DEV} -0 ${a}
                log_test_addr ${a} $? 0 "Device server, device client, local connection"
        done
@@ -3141,13 +3141,13 @@ ipv6_udp_novrf()
        do
                log_start
                run_cmd nettest -6 -D -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -6 -D -r ${a}
                log_test_addr ${a} $? 0 "Global server"
 
                log_start
                run_cmd nettest -6 -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -6 -D -r ${a}
                log_test_addr ${a} $? 0 "Device server"
        done
@@ -3155,7 +3155,7 @@ ipv6_udp_novrf()
        a=${NSA_LO_IP6}
        log_start
        run_cmd nettest -6 -D -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd_nsb nettest -6 -D -r ${a}
        log_test_addr ${a} $? 0 "Global server"
 
@@ -3165,7 +3165,7 @@ ipv6_udp_novrf()
        #log_start
        #show_hint "Should fail since loopback address is out of scope"
        #run_cmd nettest -6 -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-       #sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        #run_cmd_nsb nettest -6 -D -r ${a}
        #log_test_addr ${a} $? 1 "Device server"
 
@@ -3185,25 +3185,25 @@ ipv6_udp_novrf()
        do
                log_start
                run_cmd_nsb nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 udp
                run_cmd nettest -6 -D -r ${a} -0 ${NSA_IP6}
                log_test_addr ${a} $? 0 "Client"
 
                log_start
                run_cmd_nsb nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 udp
                run_cmd nettest -6 -D -r ${a} -d ${NSA_DEV} -0 ${NSA_IP6}
                log_test_addr ${a} $? 0 "Client, device bind"
 
                log_start
                run_cmd_nsb nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 udp
                run_cmd nettest -6 -D -r ${a} -d ${NSA_DEV} -C -0 ${NSA_IP6}
                log_test_addr ${a} $? 0 "Client, device send via cmsg"
 
                log_start
                run_cmd_nsb nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSB} 12345 udp
                run_cmd nettest -6 -D -r ${a} -d ${NSA_DEV} -S -0 ${NSA_IP6}
                log_test_addr ${a} $? 0 "Client, device bind via IPV6_UNICAST_IF"
 
@@ -3225,7 +3225,7 @@ ipv6_udp_novrf()
        do
                log_start
                run_cmd nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -6 -D -r ${a} -0 ${a} -1 ${a}
                log_test_addr ${a} $? 0 "Global server, local connection"
        done
@@ -3233,7 +3233,7 @@ ipv6_udp_novrf()
        a=${NSA_IP6}
        log_start
        run_cmd nettest -6 -s -D -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -r ${a}
        log_test_addr ${a} $? 0 "Device server, unbound client, local connection"
 
@@ -3242,7 +3242,7 @@ ipv6_udp_novrf()
                log_start
                show_hint "Should fail 'Connection refused' since address is out of device scope"
                run_cmd nettest -6 -s -D -I ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -6 -D -r ${a}
                log_test_addr ${a} $? 1 "Device server, local connection"
        done
@@ -3250,19 +3250,19 @@ ipv6_udp_novrf()
        a=${NSA_IP6}
        log_start
        run_cmd nettest -6 -s -D &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "Global server, device client, local connection"
 
        log_start
        run_cmd nettest -6 -s -D &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -C -r ${a}
        log_test_addr ${a} $? 0 "Global server, device send via cmsg, local connection"
 
        log_start
        run_cmd nettest -6 -s -D &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -S -r ${a}
        log_test_addr ${a} $? 0 "Global server, device client via IPV6_UNICAST_IF, local connection"
 
@@ -3271,28 +3271,28 @@ ipv6_udp_novrf()
                log_start
                show_hint "Should fail 'No route to host' since addresses on loopback are out of device scope"
                run_cmd nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -6 -D -r ${a} -d ${NSA_DEV}
                log_test_addr ${a} $? 1 "Global server, device client, local connection"
 
                log_start
                show_hint "Should fail 'No route to host' since addresses on loopback are out of device scope"
                run_cmd nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -6 -D -r ${a} -d ${NSA_DEV} -C
                log_test_addr ${a} $? 1 "Global server, device send via cmsg, local connection"
 
                log_start
                show_hint "Should fail 'No route to host' since addresses on loopback are out of device scope"
                run_cmd nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -6 -D -r ${a} -d ${NSA_DEV} -S
                log_test_addr ${a} $? 1 "Global server, device client via IP_UNICAST_IF, local connection"
 
                log_start
                show_hint "Should fail 'No route to host' since addresses on loopback are out of device scope"
                run_cmd nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -6 -D -r ${a} -d ${NSA_DEV} -S -U
                log_test_addr ${a} $? 1 "Global server, device client via IP_UNICAST_IF, local connection, with connect()"
        done
@@ -3300,7 +3300,7 @@ ipv6_udp_novrf()
        a=${NSA_IP6}
        log_start
        run_cmd nettest -6 -D -s -I ${NSA_DEV} -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${a} -0 ${a}
        log_test_addr ${a} $? 0 "Device server, device client, local conn"
 
@@ -3314,7 +3314,7 @@ ipv6_udp_novrf()
        run_cmd_nsb ip -6 ro add ${NSA_IP6}/128 dev ${NSB_DEV}
        log_start
        run_cmd nettest -6 -s -D &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd_nsb nettest -6 -D -r ${NSA_IP6}
        log_test $? 0 "UDP in - LLA to GUA"
 
@@ -3338,7 +3338,7 @@ ipv6_udp_vrf()
                log_start
                show_hint "Should fail 'Connection refused' since global server is disabled"
                run_cmd nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -6 -D -r ${a}
                log_test_addr ${a} $? 1 "Global server"
        done
@@ -3347,7 +3347,7 @@ ipv6_udp_vrf()
        do
                log_start
                run_cmd nettest -6 -D -I ${VRF} -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -6 -D -r ${a}
                log_test_addr ${a} $? 0 "VRF server"
        done
@@ -3356,7 +3356,7 @@ ipv6_udp_vrf()
        do
                log_start
                run_cmd nettest -6 -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -6 -D -r ${a}
                log_test_addr ${a} $? 0 "Enslaved device server"
        done
@@ -3378,7 +3378,7 @@ ipv6_udp_vrf()
                log_start
                show_hint "Should fail 'Connection refused' since global server is disabled"
                run_cmd nettest -6 -D -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -6 -D -d ${VRF} -r ${a}
                log_test_addr ${a} $? 1 "Global server, VRF client, local conn"
        done
@@ -3387,7 +3387,7 @@ ipv6_udp_vrf()
        do
                log_start
                run_cmd nettest -6 -D -I ${VRF} -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd nettest -6 -D -d ${VRF} -r ${a}
                log_test_addr ${a} $? 0 "VRF server, VRF client, local conn"
        done
@@ -3396,25 +3396,25 @@ ipv6_udp_vrf()
        log_start
        show_hint "Should fail 'Connection refused' since global server is disabled"
        run_cmd nettest -6 -D -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 1 "Global server, device client, local conn"
 
        log_start
        run_cmd nettest -6 -D -I ${VRF} -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "VRF server, device client, local conn"
 
        log_start
        run_cmd nettest -6 -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "Enslaved device server, VRF client, local conn"
 
        log_start
        run_cmd nettest -6 -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "Enslaved device server, device client, local conn"
 
@@ -3429,7 +3429,7 @@ ipv6_udp_vrf()
        do
                log_start
                run_cmd nettest -6 -D -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -6 -D -r ${a}
                log_test_addr ${a} $? 0 "Global server"
        done
@@ -3438,7 +3438,7 @@ ipv6_udp_vrf()
        do
                log_start
                run_cmd nettest -6 -D -I ${VRF} -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -6 -D -r ${a}
                log_test_addr ${a} $? 0 "VRF server"
        done
@@ -3447,7 +3447,7 @@ ipv6_udp_vrf()
        do
                log_start
                run_cmd nettest -6 -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 udp
                run_cmd_nsb nettest -6 -D -r ${a}
                log_test_addr ${a} $? 0 "Enslaved device server"
        done
@@ -3465,7 +3465,7 @@ ipv6_udp_vrf()
        #
        log_start
        run_cmd_nsb nettest -6 -D -s &
-       sleep 1
+       wait_local_port_listen ${NSB} 12345 udp
        run_cmd nettest -6 -D -d ${VRF} -r ${NSB_IP6}
        log_test $? 0 "VRF client"
 
@@ -3476,7 +3476,7 @@ ipv6_udp_vrf()
 
        log_start
        run_cmd_nsb nettest -6 -D -s &
-       sleep 1
+       wait_local_port_listen ${NSB} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${NSB_IP6}
        log_test $? 0 "Enslaved device client"
 
@@ -3491,13 +3491,13 @@ ipv6_udp_vrf()
        a=${NSA_IP6}
        log_start
        run_cmd nettest -6 -D -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "Global server, VRF client, local conn"
 
        #log_start
        run_cmd nettest -6 -D -I ${VRF} -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "VRF server, VRF client, local conn"
 
@@ -3505,13 +3505,13 @@ ipv6_udp_vrf()
        a=${VRF_IP6}
        log_start
        run_cmd nettest -6 -D -s -3 ${VRF} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "Global server, VRF client, local conn"
 
        log_start
        run_cmd nettest -6 -D -I ${VRF} -s -3 ${VRF} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "VRF server, VRF client, local conn"
 
@@ -3527,25 +3527,25 @@ ipv6_udp_vrf()
        a=${NSA_IP6}
        log_start
        run_cmd nettest -6 -D -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "Global server, device client, local conn"
 
        log_start
        run_cmd nettest -6 -D -I ${VRF} -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "VRF server, device client, local conn"
 
        log_start
        run_cmd nettest -6 -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${VRF} -r ${a}
        log_test_addr ${a} $? 0 "Device server, VRF client, local conn"
 
        log_start
        run_cmd nettest -6 -D -I ${NSA_DEV} -s -3 ${NSA_DEV} &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${a}
        log_test_addr ${a} $? 0 "Device server, device client, local conn"
 
@@ -3557,7 +3557,7 @@ ipv6_udp_vrf()
        # link local addresses
        log_start
        run_cmd nettest -6 -D -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd_nsb nettest -6 -D -d ${NSB_DEV} -r ${NSA_LINKIP6}
        log_test $? 0 "Global server, linklocal IP"
 
@@ -3568,7 +3568,7 @@ ipv6_udp_vrf()
 
        log_start
        run_cmd_nsb nettest -6 -D -s &
-       sleep 1
+       wait_local_port_listen ${NSB} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${NSB_LINKIP6}
        log_test $? 0 "Enslaved device client, linklocal IP"
 
@@ -3579,7 +3579,7 @@ ipv6_udp_vrf()
 
        log_start
        run_cmd nettest -6 -D -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd nettest -6 -D -d ${NSA_DEV} -r ${NSA_LINKIP6}
        log_test $? 0 "Enslaved device client, local conn - linklocal IP"
 
@@ -3592,7 +3592,7 @@ ipv6_udp_vrf()
        run_cmd_nsb ip -6 ro add ${NSA_IP6}/128 dev ${NSB_DEV}
        log_start
        run_cmd nettest -6 -s -D &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 udp
        run_cmd_nsb nettest -6 -D -r ${NSA_IP6}
        log_test $? 0 "UDP in - LLA to GUA"
 
@@ -3771,7 +3771,7 @@ ipv6_rt()
        do
                log_start
                run_cmd nettest ${varg} -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest ${varg} -r ${a} &
                sleep 3
                run_cmd ip link del ${VRF}
@@ -3785,7 +3785,7 @@ ipv6_rt()
        do
                log_start
                run_cmd nettest ${varg} -I ${VRF} -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest ${varg} -r ${a} &
                sleep 3
                run_cmd ip link del ${VRF}
@@ -3799,7 +3799,7 @@ ipv6_rt()
        do
                log_start
                run_cmd nettest ${varg} -I ${NSA_DEV} -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest ${varg} -r ${a} &
                sleep 3
                run_cmd ip link del ${VRF}
@@ -3814,7 +3814,7 @@ ipv6_rt()
        #
        log_start
        run_cmd_nsb nettest ${varg} -s &
-       sleep 1
+       wait_local_port_listen ${NSB} 12345 tcp
        run_cmd nettest ${varg} -d ${VRF} -r ${NSB_IP6} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -3825,7 +3825,7 @@ ipv6_rt()
 
        log_start
        run_cmd_nsb nettest ${varg} -s &
-       sleep 1
+       wait_local_port_listen ${NSB} 12345 tcp
        run_cmd nettest ${varg} -d ${NSA_DEV} -r ${NSB_IP6} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -3842,7 +3842,7 @@ ipv6_rt()
        do
                log_start
                run_cmd nettest ${varg} -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest ${varg} -d ${VRF} -r ${a} &
                sleep 3
                run_cmd ip link del ${VRF}
@@ -3856,7 +3856,7 @@ ipv6_rt()
        do
                log_start
                run_cmd nettest ${varg} -I ${VRF} -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd nettest ${varg} -d ${VRF} -r ${a} &
                sleep 3
                run_cmd ip link del ${VRF}
@@ -3869,7 +3869,7 @@ ipv6_rt()
        a=${NSA_IP6}
        log_start
        run_cmd nettest ${varg} -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest ${varg} -d ${NSA_DEV} -r ${a} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -3880,7 +3880,7 @@ ipv6_rt()
 
        log_start
        run_cmd nettest ${varg} -I ${VRF} -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest ${varg} -d ${NSA_DEV} -r ${a} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -3891,7 +3891,7 @@ ipv6_rt()
 
        log_start
        run_cmd nettest ${varg} -I ${NSA_DEV} -s &
-       sleep 1
+       wait_local_port_listen ${NSA} 12345 tcp
        run_cmd nettest ${varg} -d ${NSA_DEV} -r ${a} &
        sleep 3
        run_cmd ip link del ${VRF}
@@ -3950,7 +3950,7 @@ netfilter_tcp_reset()
        do
                log_start
                run_cmd nettest -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -r ${a}
                log_test_addr ${a} $? 1 "Global server, reject with TCP-reset on Rx"
        done
@@ -3968,7 +3968,7 @@ netfilter_icmp()
        do
                log_start
                run_cmd nettest ${arg} -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest ${arg} -r ${a}
                log_test_addr ${a} $? 1 "Global ${stype} server, Rx reject icmp-port-unreach"
        done
@@ -4007,7 +4007,7 @@ netfilter_tcp6_reset()
        do
                log_start
                run_cmd nettest -6 -s &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -6 -r ${a}
                log_test_addr ${a} $? 1 "Global server, reject with TCP-reset on Rx"
        done
@@ -4025,7 +4025,7 @@ netfilter_icmp6()
        do
                log_start
                run_cmd nettest -6 -s ${arg} &
-               sleep 1
+               wait_local_port_listen ${NSA} 12345 tcp
                run_cmd_nsb nettest -6 ${arg} -r ${a}
                log_test_addr ${a} $? 1 "Global ${stype} server, Rx reject icmp-port-unreach"
        done
@@ -4221,12 +4221,12 @@ use_case_snat_on_vrf()
        run_cmd ip6tables -t nat -A POSTROUTING -p tcp -m tcp --dport ${port} -j SNAT --to-source ${NSA_LO_IP6} -o ${VRF}
 
        run_cmd_nsb nettest -s -l ${NSB_IP} -p ${port} &
-       sleep 1
+       wait_local_port_listen ${NSB} ${port} tcp
        run_cmd nettest -d ${VRF} -r ${NSB_IP} -p ${port}
        log_test $? 0 "IPv4 TCP connection over VRF with SNAT"
 
        run_cmd_nsb nettest -6 -s -l ${NSB_IP6} -p ${port} &
-       sleep 1
+       wait_local_port_listen ${NSB} ${port} tcp
        run_cmd nettest -6 -d ${VRF} -r ${NSB_IP6} -p ${port}
        log_test $? 0 "IPv6 TCP connection over VRF with SNAT"