From owner-freebsd-isp  Fri Jan 23 04:28:19 1998
Return-Path: <owner-freebsd-isp@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id EAA26682
          for freebsd-isp-outgoing; Fri, 23 Jan 1998 04:28:19 -0800 (PST)
          (envelope-from owner-freebsd-isp@FreeBSD.ORG)
Received: from caladan.tdx.co.uk (caladan.tdx.co.uk [195.188.177.4])
          by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id EAA26650
          for <isp@freebsd.org>; Fri, 23 Jan 1998 04:28:12 -0800 (PST)
          (envelope-from kpielorz@tdx.co.uk)
Received: from tdx.co.uk (lorca-tx.tdx.co.uk [195.188.177.242])
	by caladan.tdx.co.uk (8.8.5/8.8.5) with ESMTP id MAA28143
	for <isp@freebsd.org>; Fri, 23 Jan 1998 12:28:01 GMT
Message-ID: <34C88CD1.7AFAF4DF@tdx.co.uk>
Date: Fri, 23 Jan 1998 12:28:01 +0000
From: Karl Pielorz <kpielorz@tdx.co.uk>
Organization: TDX
X-Mailer: Mozilla 4.04 [en] (WinNT; I)
MIME-Version: 1.0
To: isp@FreeBSD.ORG
Subject: IP address aliases...
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-isp@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org

A while ago I asked about this subject - and was correctly told that secondary
/ additional addresses bound to an interface under FreeBSD (I'm using 2.2.2 &
2.2.5) have to have a netmask of 0xffffffff (255.255.255.255).

What happens if I have to do the following:

ep0: 192.168.100.1 netmask 255.255.255.242

then I want to add:

ep0: 10.10.2.1 netmask 255.255.255.252

(above are obviously fake addresses)

Do I still have to munge the netmask on the second address to 255.255.255.255?
- or is this a 'different' case as the 2 IP numbers are in fact on completely
different networks? (i.e. not adding a 2nd IP address on the same network as
the first)?


Regards,

Karl Pielorz