netdev - Re: VLAN vs bridging receive precedence

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Message-ID: <20100122031153.GA26565@gondor.apana.org.au>
Date:	Fri, 22 Jan 2010 16:11:53 +1300
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	netdev@...r.kernel.org
Subject: Re: VLAN vs bridging receive precedence

Ben Hutchings <bhutchings@...arflare.com> wrote:
>
> It is not clear which behaviour is 'correct'.  However it appears that
> the XenCenter network management software currently depends on the
> accelerated behaviour.

My question would be why would you have both VLAN and bridging
on the same physical interface in the first place?

These two configurations are well-defined and work as expected:

1) Bridging after VLAN: The bridge only includes the VLAN device,
ethX.Y, not the physical ethX.
2) VLAN after bridging: The VLAN should be linked to the bridge
device, i.e., brX.Y, and not the physical ethX.

So what exactly is the admin trying to achieve here?

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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