int ctr = 0;
        int ret;
 
-       pthread_attr_setstacksize(&attr, THREAD_STACK);
-
        ifobject->ns_fd = switch_namespace(ifobject->nsname);
 
        if (test_type == TEST_TYPE_BPF_RES)
        bool bidi = test_type == TEST_TYPE_BIDI;
        bool bpf = test_type == TEST_TYPE_BPF_RES;
 
-       pthread_attr_init(&attr);
-       pthread_attr_setstacksize(&attr, THREAD_STACK);
-
        pthread_mutex_lock(&sync_mutex);
 
        /*Spawn RX thread */
-       pthread_create(&t0, &attr, ifdict_rx->func_ptr, ifdict_rx);
+       pthread_create(&t0, NULL, ifdict_rx->func_ptr, ifdict_rx);
 
        if (clock_gettime(CLOCK_REALTIME, &max_wait))
                exit_with_error(errno);
        pthread_mutex_unlock(&sync_mutex);
 
        /*Spawn TX thread */
-       pthread_create(&t1, &attr, ifdict_tx->func_ptr, ifdict_tx);
+       pthread_create(&t1, NULL, ifdict_tx->func_ptr, ifdict_tx);
 
        pthread_join(t1, NULL);
        pthread_join(t0, NULL);
 
 #define TMOUT_SEC (3)
 #define EOT (-1)
 #define USLEEP_MAX 200000
-#define THREAD_STACK 60000000
 #define SOCK_RECONF_CTR 10
 #define BATCH_SIZE 64
 #define POLL_TMOUT 1000
 pthread_mutex_t sync_mutex;
 pthread_cond_t signal_rx_condition;
 pthread_t t0, t1;
-pthread_attr_t attr;
 
 TAILQ_HEAD(head_s, pkt) head = TAILQ_HEAD_INITIALIZER(head);
 struct head_s *head_p;