netdev - Re: [RFC 0/5] bridge - introduce via_phys

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Message-ID: <20100226104946.4168e378@nehalam>
Date:	Fri, 26 Feb 2010 10:49:46 -0800
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	Ben Greear <greearb@...delatech.com>
Cc:	David Miller <davem@...emloft.net>, xemul@...nvz.org,
	gorcunov@...il.com, bridge@...ux-foundation.org,
	netdev@...r.kernel.org, den@...nvz.org
Subject: Re: [RFC 0/5] bridge - introduce via_phys_dev feature

On Fri, 26 Feb 2010 10:40:46 -0800
Ben Greear <greearb@...delatech.com> wrote:

> On 02/26/2010 10:30 AM, Stephen Hemminger wrote:
> > On Fri, 26 Feb 2010 10:08:00 -0800 (PST)
> > David Miller<davem@...emloft.net>  wrote:
> >
> >> From: Stephen Hemminger<shemminger@...ux-foundation.org>
> >> Date: Fri, 26 Feb 2010 10:01:02 -0800
> >>
> >>> TCP connections are never really bound to device. TCP routing is
> >>> flexible; if packets can get through, it doesn't care.
> >>
> >> I think he might be talking about SO_BINDTODEVICE
> >
> > What application does that with TCP?
> 
> I use it..helps with using multiple interfaces on the same system,
> especially when sending-to-self.
> 

That is a special case which is not related to the discussion.
We are talking about being able to setup a bridge and migrate the
associated state from the ethernet device to the bridge.


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