Date: Sat, 2 Jun 2001 11:15:48 +0300 From: Peter Pentchev <roam@orbitel.bg> To: ryan beasley <ryanb@enteract.com> Cc: freebsd-bugs@FreeBSD.org Subject: Re: bin/22489: mass IP aliasing via ifconfig broken Message-ID: <20010602111548.B24747@ringworld.oblivion.bg> In-Reply-To: <200105301450.f4UEo2477166@freefall.freebsd.org>; from ryanb@enteract.com on Wed, May 30, 2001 at 07:50:02AM -0700 References: <200105301450.f4UEo2477166@freefall.freebsd.org>
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On Wed, May 30, 2001 at 07:50:02AM -0700, ryan beasley wrote:
> The following reply was made to PR bin/22489; it has been noted by GNATS.
>
> From: ryan beasley <ryanb@enteract.com>
> To: Bill Swingle <unfurl@dub.net>
> Cc: freebsd-gnats-submit@freebsd.org
> Subject: Re: bin/22489: mass IP aliasing via ifconfig broken
> Date: Wed, 30 May 2001 09:46:10 -0500
>
> On Tue, May 29, 2001 at 10:43:34PM -0700, Bill Swingle wrote:
> > Why don't you just use the aliasing mechanisim that is built into
> > /etc/rc.network?
> >
> > ifconfig_de0_alias0="inet 64.81.6.35 netmask 255.255.255.255"
> > ifconfig_de0_alias1="inet 64.81.6.36 netmask 255.255.255.255"
> > ifconfig_de0_alias2="inet 64.81.6.37 netmask 255.255.255.255"
> > ifconfig_de0_alias3="inet 64.81.6.38 netmask 255.255.255.255"
> > etc....
>
> The file controlling all of the addresses is an RCS'd flat text
> file with _just_ IPs listed under it. The purpose is so that
> the "junior" types could run around and add/remove addresses to
> be bound to this machine. I trust them much more w/ a flat text
> of IP<newline>IP<newline>etc than I would anyone mucking up
> rc.conf. :)
>
> > I'm not so sure this is a problem with FreeBSD since there is a
> > perfectly reasonable way to go about this that works.
>
> Either way, the rc.network essentially does the same thing;
> ifconfig <blah1> alias, ifconfig <blah2> alias, etc. The only
> difference is that I use a for/do/done loop whereas rc.network
> uses while/do/done.
>
> Anywho, if I run ifconfig and find all the addresses I bound
> listed there, but they're NOT responsive to external network
> traffic, I think that _is_ a FreeBSD problem.
>
> ... but on another note, I completely forgot that this was still
> open. ca-1 is running w/ a kernel from 12/19/2000 and I couldn't
> replicate the behavior anymore. (woot.) Guess it's time to
> close the PR. ;)
Have you considered putting something like the following in /etc/rc.conf?
Yes, it will be evaluated each time rc.conf is sourced by some startup
script, and it might cause a lot of expr invocations, but it seems to set
all the relevant environment vars for me..
G'luck,
Peter
--
I am not the subject of this sentence.
iface=rl0
eval `(
i=0
exec < iplist
while read ipads; do
echo "ifconfig_${iface}_alias${i}='inet $ipads netmask 255.255.255.255'";
i=$(expr $i + 1);
done
)`
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