netdev - RE: ebtables on a stick

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Message-ID: <925A849792280C4E80C5461017A4B8A2A0491C@mail733.InfraSupportEtc.com>
Date:	Fri, 2 Dec 2011 10:09:35 -0600
From:	"Greg Scott" <GregScott@...rasupport.com>
To:	"David Lamparter" <equinox@...c24.net>,
	"Michal Soltys" <soltys@....info>
Cc:	<netdev@...r.kernel.org>
Subject: RE: ebtables on a stick

..and as much as I went into the proxy thing kicking and screaming, it
does seem clean and simple now that I finally did it.

The routing still has me confused - my public host is on the router's
eth1, its gateway is on eth0, but it all still works.  I should probably
reboot that router at some point soon to make sure there aren't any
hidden legacies from my old bridge config left over.  

- Greg

-----Original Message-----
From: David Lamparter [mailto:equinox@...c24.net] 
Sent: Friday, December 02, 2011 10:05 AM
To: Michal Soltys
Cc: Greg Scott; David Lamparter; netdev@...r.kernel.org
Subject: Re: ebtables on a stick

On Fri, Dec 02, 2011 at 04:40:13PM +0100, Michal Soltys wrote:
> You should be able to avoid whole proxy thing altogether (on your 
> router), by doing:
> 
> ip add add 1.2.115.157/32 dev eth0
> ip ro del table local 192.168.99.5/32 dev eth0
> ip route add 1.2.115.157/32 dev eth1

... and any application that looks at the local interface addresses
(e.g. ntpd, bind, etc.) will get thoroughly confused. Oh and worst-case
(i don't know/didn't check) source address selection as well.

I'd advise against it.

> instead of:
> 
> ip neigh add proxy 1.2.115.157 dev eth0

-David
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