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Date:      Mon, 26 May 2014 13:07:35 -0400
From:      "George Neville-Neil" <gnn@neville-neil.com>
To:        "Eygene Ryabinkin" <rea@freebsd.org>
Cc:        Marcelo Araujo <araujobsdport@gmail.com>, net@freebsd.org
Subject:   Re: Allowing CARP to use arbitrary OUI prefix and allocating block from FreeBSD's OUI space assignment for that
Message-ID:  <43D946E6-809D-4F1C-96DD-6C4F6199FB07@neville-neil.com>
In-Reply-To: <m6n8XMy%2BOPAwXmxPcjDY/LDEM/0@dHhGgwofm7uNfL6/X5%2BbGIkDUYs>
References:  <Nlrr646yWAdJ7EfNj9z5ymwq5ZQ@dHhGgwofm7uNfL6/X5%2BbGIkDUYs> <20140508200404.GA50446@glebius.int.ru> <D5E11D41-EA0D-40D0-9E97-2E91EF50ED93@neville-neil.com> <z1EJt6btuZOiE3dN4jcj9CzW0rE@kMSFIaW2kZGIra2nfrZm/OZJ8tE> <m6n8XMy%2BOPAwXmxPcjDY/LDEM/0@dHhGgwofm7uNfL6/X5%2BbGIkDUYs>

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On 21 May 2014, at 10:58, Eygene Ryabinkin wrote:

> Mon, May 12, 2014 at 12:39:49AM +0400, Eygene Ryabinkin wrote:
>> Sun, May 11, 2014 at 04:30:32PM -0400, George Neville-Neil wrote:
>>> On May 8, 2014, at 16:04 , Gleb Smirnoff <glebius@FreeBSD.org> wrote:=

>>>> On Thu, May 08, 2014 at 12:10:48PM +0400, Eygene Ryabinkin wrote:
>>>> E>  - I'll do a patch for carp(4) that will allow it to use configur=
able
>>>> E>    OUI from a sysctl knob (first 5 bytes of OUI);
>>>>
>>>> Please no sysctl knobs. This should be configurable via ifconfig(8)
>>>> per vhid.
>>>
>>> Agree, please do this via ifconfig.
>>
>> http://codelabs.ru/fbsd/carp-ouibase.diff
>
> Updated the patch, URL remains the same:
> http://codelabs.ru/fbsd/carp-ouibase.diff
>
> Changes:
>
> - full MAC is settable via ether/lladdr/link keyword, no
>  ouibase keyword now exists;
>
> - these keywords accept "carp" and "vrrp" keywords making
>  them to set new and old bases with the last octet set to
>  the VHID;
>
> - network.subr was updated not to mess with any keywords that
>  go after 'vhid' and just pass it down to ifconfig as is.
>
> I did two days of testing and hadn't yet found any problems.

Hi,

One note on CARP and VRRP moving forwards.  I realize that this patch is =
partly
a CARP specific issue but a lot of people on a few mailing lists seem to =
have assumed
that VRRP is no longer under patent threat.

According to the FreeBSD Foundation's lawyers there are two extant patent=
s, due
to expire in 2017, 3 years hence.  =


CISCO =E2=80=93 US6108300: Method and apparatus for transparently providi=
ng a failover network device =

IBM:  US6148410: Fault tolerant recoverable TCP/IP connection router, Bas=
key, Dillenberger, Goldszmidt, Hunt, Levy-Abegnoli, Nick,Schmidt, Novembe=
r 14, 2000.   =


So let's not go assuming that VRRP is "free" just yet.

As to updating our CARP to behave correctly, that's still on the table.

Best,
George

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