netdev - Re: [PATCH net-next] net: change fib behavior based on interface link status

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Date:	Wed, 3 Jun 2015 14:27:18 -0400
From:	Andy Gospodarek <gospo@...ulusnetworks.com>
To:	Scott Feldman <sfeldma@...il.com>
Cc:	Netdev <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>, ddutt@...ulusnetworks.com
Subject: Re: [PATCH net-next] net: change fib behavior based on interface
 link status

On Wed, Jun 03, 2015 at 11:15:55AM -0700, Scott Feldman wrote:
> On Tue, Jun 2, 2015 at 8:07 PM, Andy Gospodarek
> <gospo@...ulusnetworks.com> wrote:
> > This feature is only enabled with the new sysctl set (default is off):
> > net.core.kill_routes_on_linkdown = 1
> 
> One more thing, sorry.  This feature is typically implemented today in
> user-space on a per-interface basis.  The example I'm thinking of is
> Quagga's "link-detect" directive which goes on an interface.  Should
> this be a bool on each interface in systcl?  That would let user not
> enable on selected interfaces.
That would not be my preference.

I'm willing to investigate the per-namespace support if Hannes would
like and add switchdev support for v2, but would prefer this not become
that granular.

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