ipv6: Log the affected address when DAD failure occurs

If an interface has multiple addresses, the current message for DAD
failure isn't really helpful, so this patch adds the address itself to
the printk.

Signed-off-by: Jens Rosenboom <me@jayr.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index f216a41ceb2257f6068ceaefd59e67b48d6dd30d..55f486d89c88eeb1d3e1409cd115cf996c9a8b07 100644 (file)
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1407,8 +1407,8 @@ void addrconf_dad_failure(struct inet6_ifaddr *ifp)
        struct inet6_dev *idev = ifp->idev;
 
        if (net_ratelimit())
-               printk(KERN_INFO "%s: IPv6 duplicate address detected!\n",
-                       ifp->idev->dev->name);
+               printk(KERN_INFO "%s: IPv6 duplicate address %pI6c detected!\n",
+                       ifp->idev->dev->name, &ifp->addr);
 
        if (idev->cnf.accept_dad > 1 && !idev->cnf.disable_ipv6) {
                struct in6_addr addr;