*BSD News Article 55640


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From: ck@news.toplink.de (Christian Kratzer)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Multiple IP addresses with ifconfig alias
Date: 29 Nov 1995 20:32:58 GMT
Organization: TopLink GbR, Germany, Internet Services
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Message-ID: <49ig1q$7v6@toplink1.toplink.net>
References: <49cknd$fpd@eplet.mira.net.au>
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: Hi,

: I am running FreeBSD 2.0 with a NE2000 compatible NIC (ed1) and I am 
: trying to add multiple IPs in order to run multple web servers with 
: multiple domains, but it doesn't seem to work. The command I have tried 
: is of the form "ifconfig ed1 inet xxx.xxx.xxx.xxx alias". It doesn't 
: complain when I enter the command but I get no response when trying to 
: ping the alias address.

: Anybody got any clues.

When addinng an alias on the same subnet you also need to add an explicit
route to the interface. This works for me on FreeBSD2.0R.  Although I will
be dumping the NE2000's I have tomorrow (but thats another story).

Here's the hack I use to register an additional ip on ed1

	ifconfig ed1 inet 1.2.3.4 alias
	route add 1.2.3.4 localhost

ps: Is this still the same on FreeBSD2.0.5 or FreeBSD 2.1R.  I will be 
upgrading soon and would not like to spend 2 days experimenting and 
searching the net ;-)

Greetings
Christian

--
TopLink GbR, Internet Services				info@toplink.net
Christian Kratzer					http://www.toplink.net/
Phone: 	+49 7452 87174
Fax: 	+49 7452 87175		FreeBSD spoken here!