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 <[email protected]>
--- linux/net/ipv6/addrconf.c 2007-02-22 19:46:27.000000000 +0100
+++ linux/net/ipv6/addrconf.c 2007-02-25 00:22:37.000000000 +0100
@@ -456,6 +456,8 @@
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
-
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