netdev - Re: [PATCH] flowi: add concept of "not

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Date:	Wed, 03 Feb 2016 19:44:05 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	"Jason A. Donenfeld" <Jason@...c4.com>
Cc:	Julian Anastasov <ja@....bg>, Netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	David Ahern <dsa@...ulusnetworks.com>
Subject: Re: [PATCH] flowi: add concept of "not_oif"

On Wed, 2016-02-03 at 22:02 +0100, Jason A. Donenfeld wrote:

> 
> >         I don't know about the particular problems with
> > tunnels but the scripts can use the route metric to order
> > the routes in a table.
> 
> This unfortunately does not cut it with tunnels.

ip rule show

ip route show table 10

I am pretty sure that you could select/change skb mark when packets
traverse the tunnel : The second route lookup can then select a
completely different table.