[152662] in North American Network Operators' Group
Re: What is a link-local address?? WAS: Re: JUNOS forwards IPv6
daemon@ATHENA.MIT.EDU (William Herrin)
Mon May 7 08:57:16 2012
In-Reply-To: <CAEmG1=q6aa_33L29fjf7M4S_TQA4ydUT2yo_X22d3q+xFOfSMg@mail.gmail.com>
Date: Mon, 7 May 2012 08:56:13 -0400
From: William Herrin <bill@herrin.us>
To: Matthew Petach <mpetach@netflight.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 5/6/12, Matthew Petach <mpetach@netflight.com> wrote:
> Which way do *you* vote?
Hi Matthew,
Cisco routers forward packets for 127.0.0.0/8 unless explicitly
configured not to, treating it like any other unicast address.
Linux load balancers require a special kernel patch to also use them
as routers because the kernel authors failed to conceive of a
situation where accepting an external packet with a source address
matching a configured interface address was, in fact, a correct thing
to do.
I vote for the Cisco approach. It has occasionally quirky results but
it's also flexible enough to handle situations the protocol designers
didn't conceive of.
Regards,
Bill Herrin
--
William D. Herrin ................ herrin@dirtside.com bill@herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004
