Date: Sat, 17 Mar 2001 22:01:13 -0700 From: Wes Peters <wes@softweyr.com> To: Nick Rogness <nick@rogness.net> Cc: freebsd-net@FreeBSD.ORG, Jeroen Ruigrok/Asmodai <asmodai@wxs.nl> Subject: Re: same interface Route Cache Message-ID: <3AB44119.3666D825@softweyr.com> References: <Pine.BSF.4.21.0103171047250.16998-100000@cody.jharris.com>
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Nick Rogness wrote:
>
> On Sat, 17 Mar 2001, Nick Rogness wrote:
>
> More clarification.
>
> >
> > > I completely fail to see that you have actually stated a problem yet.
> > >
> > > What exactly is the problem you think you're trying to solve here?
> > >
> >
> > Consider the following. I have to restate this every damn couple
> > of weeks to get it through. Here is the problem:
> >
> >
> > ISP#1 ISP#2
> > | |
> > | |
> > --- xl0 FreeBSD xl1 -----
> > xl2
> > |
> > |
> > Internal network
> > |
> > |
> > Machine 1
> >
> >
> > Packet 1 comes in through ISP #2 network. It comes into your
> > internal network to machine 1. Machine 1 replies to the
> > packet...but where does it go? It will exit through interface
> > to ISP #1 because of the default gateway. It came in ISP #2 and
> > left out ISP #1. There is your problem.
>
> There is no way to tell your packet to go back out to ISP #2. That is the
> point I'm trying to get across. Unless your running a routing
> daemon. But is that really practical with cable modems, dsl, etc?...I
> don't think so.
Why would the physical media have anything to do with routing protocols?
> > What if you are running nat in this case....your hosed.
>
> natd on each interface is what I'm stating here...just to clarify.
natd doesn't correctly translate RIP packets?
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
wes@softweyr.com http://softweyr.com/
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