netdev - Re: switching network namespace midway

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Message-ID: <20121025155927.GI15034@kvack.org>
Date:	Thu, 25 Oct 2012 11:59:28 -0400
From:	Benjamin LaHaise <bcrl@...ck.org>
To:	rsa <ravi.mlists@...il.com>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>, netdev@...r.kernel.org
Subject: Re: switching network namespace midway

On Thu, Oct 25, 2012 at 11:29:34AM -0400, rsa wrote:
> Hi Ben
> For L2TP that should work very well. But, with other tunnel types like GRE etc.
> route lookups have to be done first in the inner and then outer.  It
> makes it easier
> to keep keep the tunnel in the inner namespace in such cases. right?

I've read IPv4 gre code, and it appears to do the right thing on rx, but it 
does *not* appear to handle namespaces correctly on transmit.  In general, 
I would expect pretty much all code to get namespace handling correct for 
the rx case.  I'll have a closer look at fixing this tomorrow if nobody else 
beats me to it.

		-ben
-- 
"Thought is the essence of where you are now."
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