From: Mike Manning <mmann...@brocade.com> Date: Thu, 18 Aug 2016 14:39:40 +0100
> If DAD fails with accept_dad set to 2, global addresses and host routes > are incorrectly left in place. Even though disable_ipv6 is set, > contrary to documentation, the addresses are not dynamically deleted > from the interface. It is only on a subsequent link down/up that these > are removed. The fix is not only to set the disable_ipv6 flag, but > also to call addrconf_ifdown(), which is the action to carry out when > disabling IPv6. This results in the addresses and routes being deleted > immediately. The DAD failure for the LL addr is determined as before > via netlink, or by the absence of the LL addr (which also previously > would have had to be checked for in case of an intervening link down > and up). As the call to addrconf_ifdown() requires an rtnl lock, the > logic to disable IPv6 when DAD fails is moved to addrconf_dad_work(). ... > Signed-off-by: Mike Manning <mmann...@brocade.com> Applied, thanks.
