Date: Wed, 17 Apr 2002 11:38:37 +0100 From: Brian Somers <brian@freebsd-services.com> To: Ruslan Ermilov <ru@FreeBSD.ORG> Cc: freebsd-bugs@FreeBSD.ORG Subject: Re: kern/37173: ifconfig ... alias has problems setting aliases Message-ID: <200204171038.g3HAcb11000812@hak.lan.Awfulhak.org> In-Reply-To: Message from Ruslan Ermilov <ru@FreeBSD.ORG> of "Wed, 17 Apr 2002 01:00:13 PDT." <200204170800.g3H80DX86586@freefall.freebsd.org>
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> The following reply was made to PR kern/37173; it has been noted by GNATS.
>
> From: Ruslan Ermilov <ru@FreeBSD.org>
> To: Nicolas Rachinsky <list@rachinsky.de>
> Cc: bug-followup@FreeBSD.org
> Subject: Re: kern/37173: ifconfig ... alias has problems setting aliases
> Date: Wed, 17 Apr 2002 10:59:18 +0300
>
> On Wed, Apr 17, 2002 at 12:10:09AM -0700, Nicolas Rachinsky wrote:
> > The following reply was made to PR kern/37173; it has been noted by GNATS.
> >
> > From: Nicolas Rachinsky <list@rachinsky.de>
> > To: Martin.Kraemer@Fujitsu-Siemens.com
> > Cc: FreeBSD-gnats-submit@FreeBSD.ORG
> > Subject: Re: kern/37173: ifconfig ... alias has problems setting aliases
> > Date: Wed, 17 Apr 2002 09:08:08 +0200
> >
> > * Martin.Kraemer@Fujitsu-Siemens.com [2002-04-17 08:52:50 +0200]:
> > > >Description:
> > > Using FreeBSD-4.5-STABLE from ~2 months ago, I had no problems
> > > setting several IP aliases on my xl0 interface by setting the
> > > following in /etc/rc.conf:
> > > ifconfig_xl0="inet 172.25.124.236 netmask 255.255.255.0"
> > > ifconfig_xl0_alias0="inet 172.25.124.237 netmask 255.255.255.0"
> > > ifconfig_xl0_alias1="inet 172.25.124.238 netmask 255.255.255.0"
> > > ifconfig_xl0_alias2="inet 192.168.172.1 netmask 255.255.255.0"
> > > With a current kernel however, after reboot only one or two of these
> > > IP addresses are actually set. The other IP addresses are unset.
> >
> > From man ifconfig:
> > | If the address is on the same subnet as the first network address for
> > | this interface, a netmask of 0xffffffff has to be specified.
> >
> > Use netmask 255.255.255.255 for the aliases.
> >
> To be more precise, you should use netmask of all ones for aliases
> in the same subnet only. See ifconfig(8) manpage for more details.
For the record (PR)...
This was recently fixed in -current. I have not merged the change
into -stable as it's likely to break configurations like the one
above.
In short, -stable has (and will keep) the bug.
--
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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