From 74ba050ddee2ade5fcdad88433c26ffea7034b13 Mon Sep 17 00:00:00 2001 From: Michal Wrobel Date: Tue, 27 Feb 2007 11:12:45 -0800 Subject: Don't add anycast reference to device multiple times [IPV6]: anycast refcnt fix This patch fixes a bug in Linux IPv6 stack which caused anycast address to be added to a device prior DAD has been completed. This led to incorrect reference count which resulted in infinite wait for unregister_netdevice completion on interface removal. Signed-off-by: Michal Wrobel Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/addrconf.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net') diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index e3854696988d..58cb669a27ca 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -469,6 +469,8 @@ static void dev_forward_change(struct inet6_dev *idev) ipv6_dev_mc_dec(dev, &addr); } for (ifa=idev->addr_list; ifa; ifa=ifa->if_next) { + if (ifa->flags&IFA_F_TENTATIVE) + continue; if (idev->cnf.forwarding) addrconf_join_anycast(ifa); else -- cgit v1.2.3