Commit bd015928 authored by Daniel Walter's avatar Daniel Walter Committed by David S. Miller

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: default avatarDaniel Walter <dwalter@barracuda.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent eb8aa72d
...@@ -945,9 +945,10 @@ static void ndisc_recv_na(struct sk_buff *skb) ...@@ -945,9 +945,10 @@ static void ndisc_recv_na(struct sk_buff *skb)
} }
ifp = ipv6_get_ifaddr(dev_net(dev), &msg->target, dev, 1); ifp = ipv6_get_ifaddr(dev_net(dev), &msg->target, dev, 1);
if (ifp) { if (ifp) {
if (ifp->flags & IFA_F_TENTATIVE) { if (skb->pkt_type != PACKET_LOOPBACK
addrconf_dad_failure(ifp); && (ifp->flags & IFA_F_TENTATIVE)) {
return; addrconf_dad_failure(ifp);
return;
} }
/* What should we make now? The advertisement /* What should we make now? The advertisement
is invalid, but ndisc specs say nothing is invalid, but ndisc specs say nothing
......
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