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To: "Mark Blackman" <mark.blackman@netscalibur.co.uk>
Cc: freebsd-net@FreeBSD.ORG, brian@Awfulhak.org
Subject: Re: default route disappears on address changes for interface. 
In-Reply-To: Message from "Mark Blackman" <mark.blackman@netscalibur.co.uk> 
   of "Mon, 09 Jul 2001 11:35:29 BST." <200107091035.LAA90463@mailhost2.dircon.co.uk> 
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Date: Mon, 09 Jul 2001 11:41:37 +0100
From: Brian Somers <brian@Awfulhak.org>
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ifconfig(8) deletes and re-adds the given address.  When the delete 
happens, the route (now) disappears.

IMHO, ifconfig(8) should be smart enough to optimise out no-ops.

> on FreeBSD 4.3-STABLE #1: Thu May 24 13:03:35 BST 2001
> 
> Is it now standard/expected behaviour that default routes
> disappear on an IP address change even within the same netmask
> or even to the same address if the default route is on that
> interface?
> 
> Say I've got the following setup.
> 
> ifconfig ep0 inet 10.0.0.1 netmask 255.255.255.0
> route add default 10.0.0.254
> 
> then i do 
> 
> ifconfig ep0 inet 10.0.0.2  (or even 10.0.0.1)
> 
> suddenly my default route disappears. Is this expected
> behaviour and has this always been the case? I'm pretty
> sure it wasn't.
> 
> Thanks,
> Mark Blackman

-- 
Brian <brian@freebsd-services.com>                <brian@Awfulhak.org>
      http://www.freebsd-services.com/        <brian@[uk.]FreeBSD.org>
Don't _EVER_ lose your sense of humour !      <brian@[uk.]OpenBSD.org>



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