*BSD News Article 85162


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From: "Jordan K. Hubbard" <jkh@FreeBSD.org>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: FreeBSD dialin Server routing ?
Date: Wed, 18 Dec 1996 06:21:21 -0800
Organization: Walnut Creek CDROM
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Jon Harsem II wrote:
> Two questions :
>         1. Can iijppp and the NIC on the FreeBSD machine have the same IP
> address ?

Yes.

>         2. Is this the way to do it .. ?

No, not really. :-)

Even though the former works, it is frowned upon due to the unpleasant
secondary effects which are made possible by having two interfaces with
the same address.  It can also be confusing to the human mind, which has
problems with ambiguity and more easily grasps a setup where the
ethernet connected hosts all use one subnet and the point-to-point links
all transit through a different subnet.  It also makes mrouted(8)
happier to route packets, should you ever decide to run multicast
traffic. :)
-- 
- Jordan Hubbard
  President, FreeBSD Project