tree f7e5aec42f50c6e4751751cf422c7bf16bff69ce
parent 5b2a19539c5f59c5a038d213ede723f0245d97cf
author stephen hemminger <shemminger@vyatta.com> 1267536766 +0000
committer David S. Miller <davem@davemloft.net> 1267691973 -0800

IPv6: addrconf notify when address is unavailable

My recent change in net-next to retain permanent addresses caused regression.
Device refcount would not go to zero when device was unregistered because
left over anycast reference would hold ipv6 dev reference which would hold
device references...

The correct procedure is to call notify chain when address is no longer
available for use.  When interface comes back DAD timer will notify
back that address is available.

Also, link local addresses should be purged when interface is brought
down. The address might be changed.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>