From owner-freebsd-stable  Fri May  9 22:37:48 1997
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To: chad@anasazi.com
cc: freebsd-stable@FreeBSD.ORG
Subject: Re: IP aliasing hacks 
In-reply-to: Your message of "Fri, 09 May 1997 21:11:37 PDT."
             <9705100411.AA25674@chad.anasazi.com> 
Date: Fri, 09 May 1997 22:37:50 -0700
Message-ID: <18491.863242670@time.cdrom.com>
From: "Jordan K. Hubbard" <jkh@time.cdrom.com>
Sender: owner-stable@FreeBSD.ORG
X-Loop: FreeBSD.org
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> Ok, you asked for it...

Heh.  This is already implemented. :-)

>From the 2.2's /etc/rc.network (was earlier /etc/netstart):

    # Set up all the network interfaces, calling startup scripts if needed
    for ifn in ${network_interfaces}; do
            if [ -e /etc/start_if.${ifn} ]; then
                    . /etc/start_if.${ifn} ${ifn}
            fi
            # Do the primary ifconfig if specified
            eval ifconfig_args=\$ifconfig_${ifn}
            if [ -n "${ifconfig_args}" ] ; then
                    ifconfig ${ifn} ${ifconfig_args}
            fi
            # Check to see if aliases need to be added
            alias=0
            while :
            do
                    eval ifconfig_args=\$ifconfig_${ifn}_alias${alias}
                    if [ -n "${ifconfig_args}" ]; then
                            ifconfig ${ifn} ${ifconfig_args} alias
                            alias=`expr ${alias} + 1`
                    else
                            break;
                    fi
            done
    ...