From owner-freebsd-questions  Mon Oct 23 15:15: 7 2000
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From: Les Biffle <les@ns3.safety.net>
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Subject: Re: gateway on different subnet
In-Reply-To: <Pine.BSF.4.21.0010231520020.11422-100000@vespa.orem.iserver.com> from Fred Clift at "Oct 23, 2000 03:27:18 pm"
To: fclift@verio.net (Fred Clift)
Date: Mon, 23 Oct 2000 15:14:54 -0700 (MST)
Cc: marko@dppl.com (Marko Ruban), freebsd-questions@FreeBSD.ORG,
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> Hm -- how about using proxy-arp style routing?

Here's what I've done in the past:

1.  Have a friend out in the net ping your address 208.59.162.242

2.  Run tcpdump and look for someone ARPing for you.  That someone
will very likely be your default gateway as seen from your site.
If that router is in your subnet, set your default to it and you're
done.  If not, continue at the next step.

3.  Pick an IP Address in your cable subnet that feels like a really
good router address to you.  Make something up.  208.59.162.1 perhaps?

4.  Use "arp -s 208.59.162.1 xx:xx:xx:xx:xx:xx" to install an arp
entry in your route table for this made-up address.  That will keep
you from ARPing for 208.59.162.1 and discovering the device that
really owns that address.

5.  Set your default gateway to 208.59.162.1.

Good luck,

-Les

-- 
Les Biffle             Community Service...  Just Say NO!
(480) 778-0177    les@safety.net  http://www.networksafety.com/
Network Safety, 7802 E Gray Rd Ste 500,  Scottsdale, AZ 85260


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