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Date: Mon, 4 Dec 1995 07:14:39 -0500 (EST)
From: Will Mitayai Keeso Rowe <mitayai@dreaming.org>
To: Greg Lehey <grog@lemis.de>
cc: joerg_wunsch@uriah.heep.sax.de, FreeBSD Hackers <hackers@FreeBSD.ORG>
Subject: Re: *** HELP! ifconfig aliases!? ***
In-Reply-To: <199512040721.IAA09236@allegro.lemis.de>
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On Mon, 4 Dec 1995, Greg Lehey wrote:

> Date: Mon, 4 Dec 1995 08:21:52 +0100 (MET)
> From: Greg Lehey <grog@lemis.de>
> To: joerg_wunsch@uriah.heep.sax.de
> Cc: FreeBSD Hackers <hackers@FreeBSD.ORG>
> Subject: Re: *** HELP! ifconfig aliases!? ***
> 
> J Wunsch writes:
> > 
> > As Ollivier Robert wrote:
> > > 
> > > It seems that Robert Shady said:
> > > > sites on it.  Doing the standard "ifconfig ed0 alias a.b.c.d" didn't
> > > > work, and neither did "ifconfig ed0 alias a.b.c.d netmask 255.255.255.0"
> > > 
> > > Use netmask 0xffffffff for aliases. 
> > 
> > ...but only if they are in the same (sub)net as the primary address.
> 
> OK, I'll bite: why?   I thought aliases were just an alternative
> address, and that they were subject to the same constraints as the
> primary address.
> 
> Greg
> 
Hmm... i tried this myself in order to play with the multi-domain aspect 
of apache as:

ifconfig tun0 alias 198.96.119.1 netmask 0xffffffff

and got:

ifconfig: ioctl (SIOCAIFADDR): Destination address required

so, after checking out the man page, i determined that it should be:

ifconfig tun0 198.96.119.1 198.96.119.129 netmask 0xffffffff alias

but that still gave me the error:

ifconfig: ioctl (SIOCAIFADDR): File exists

any ideas?

-Mit



------------------------------------------------------------------------
            Will Mitayai Keeso Rowe, mitayai@dreaming.org 
                   http://www.dreaming.org/~mitayai    
                       Toronto, Ontario, Canada