Commit bd015928 authored Apr 13, 2011 by Daniel Walter Committed by David S. Miller Apr 15, 2011

ipv6: ignore looped-back NA while dad is running



[ipv6] Ignore looped-back NAs while in Duplicate Address Detection

If we send an unsolicited NA shortly after bringing up an
IPv6 address, the duplicate address detection algorithm
fails and the ip stays in tentative mode forever.
This is due a missing check if the NA is looped-back to us.

Signed-off-by: Daniel Walter <dwalter@barracuda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent eb8aa72d

net/ipv6/ndisc.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -945,7 +945,8 @@ static void ndisc_recv_na(struct sk_buff *skb)
		}
		ifp = ipv6_get_ifaddr(dev_net(dev), &msg->target, dev, 1);
		if (ifp) {
		if (ifp->flags & IFA_F_TENTATIVE) {
		if (skb->pkt_type != PACKET_LOOPBACK
		&& (ifp->flags & IFA_F_TENTATIVE)) {
		addrconf_dad_failure(ifp);
		return;
		}