Subject: Re: illegal network routes and a ponderance
To: Thor Lancelot Simon <tls@rek.tjls.com>
From: Alan Barrett <apb@cequrux.com>
List: tech-net
Date: 02/19/2003 09:59:41
On Tue, 18 Feb 2003, Thor Lancelot Simon wrote:
> A) It's already possible to do it if you _must_
> B) The "technology" that "requires" it is in its death throes (phone-return
>    cable modems/sat modems)
> C) That technology doesn't even really require it anyway; the problem is an
>    artifact of misconfiguration of the head-end hardware in the first place.
> D) This sort of routing arrangement violates all of the fundamental Internet
>    Standards _and_ plain, ordinary common sense.

Well, yes, but the same kind of thing is trivially done on
a Cisco, and it would be nice to be able to do it on NetBSD too.

	# Net 10.0.0.0/8 is reachable via interface Ethernet2/1/0;
	# just use ARP.
	ip route 10.0.0.0 255.0.0.0 Ethernet2/1/0
	# Default route is to 10.1.2.3.  Use recursive lookup to figure out
	# how to get there.
	ip route 0.0.0.0 0.0.0.0 10.1.2.3

--apb (Alan Barrett)