From mboxrd@z Thu Jan  1 00:00:00 1970
From: Aron Griffis <aron@hp.com>
Subject: ifconfig bug removes aliases
Date: Wed, 10 Mar 2004 16:20:56 -0500
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Hello, here is the sequence:

    ifconfig eth0:1 10.10.10.1 netmask 255.255.0.0 
    ifconfig eth0:2 10.10.10.2 netmask 255.255.0.0 
    ifconfig eth0:1 down

At this point eth0:2 has disappeared also.  It appears that the aliases
must be on the same subnet for this to occur, and the creation order is
also important.

Aron