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From: "Drew Tomlinson" <drew@mykitchentable.net>
To: "Helge Oldach" <helge.oldach@atosorigin.com>
References: <200311070759.IAA19949@galaxy.hbg.de.ao-srv.com>
Date: Fri, 7 Nov 2003 06:09:38 -0800
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cc: freebsd-net@freebsd.org
Subject: Re: Routing With Two ISPs?
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----- Original Message -----
From: "Helge Oldach" <helge.oldach@atosorigin.com>
Sent: Thursday, November 06, 2003 11:59 PM


> Drew Tomlinson:
> >I have a 4.8 box serving as a gateway with two connections to the
> >Internet.  Is there some way to set the box up so that packets are
> >routed out through the same interface from which they arrived?  For
> >example, if a connection is initiated on port 80 from a packet arriving
> >on one interface, is there a way to make the outgoing packets from my
> >web server use that same interface as a gateway instead of the default
> >interface?
>
> Unfortunately not. While your application (multi-homing, aka "strong ES"
> model of RFC 1122) would appear simpler, a general solution would target
> at true policy-based routing.
>
> The latest information I have seen is
> http://www.mail-archive.com/freebsd-net@freebsd.org/msg07737.html.

Thank you for your reply.  I can understand that it's more difficult than it
appears.  I get easily confused when thinking about routing.  :)

Now that I know what "terms" I'm looking for (like "strong ES") I can search
this in the threads and see if/when it gets implemented.

Cheers,

Drew