Subject: Re: [PATCH net] net: Flush local routes when device changes vrf association

From: David Ahern <[email-masked]>
Date: Thu, 10 Dec 2015 09:43:00 -0700

On 12/9/15 6:35 PM, David Ahern wrote:
> The VRF driver cycles netdevs when an interface is enslaved or released:
> the down event is used to flush neighbor and route tables and the up
> event (if the interface was already up) effectively moves local and
> connected routes to the proper table.
>
> As of 4f823defdd5b the local route is left hanging around after a link
> down, so when a netdev is moved from one VRF to another (or released
> from a VRF altogether) local routes are left in the wrong table.
>
> Fix by introducing a NETDEV_VRF_CHANGE event that can be used to trigger
> the flush of all routes, including local ones.
>
> Fixes: 4f823defdd5b ("ipv4: fix to not remove local route on link down")
> Cc: Julian Anastasov <[email-masked]>
> Signed-off-by: David Ahern <[email-masked]>

At Nik's pushing I see that I can do this without adding a new netdev 
event; the NETDEV_CHANGEUPPER can be used for this as well.

Please disregard this patch.