From: John Heffner <jheffner@psc.edu>
To: Jeroen Massar <jeroen@unfix.org>
Cc: Marc Singer <elf@buici.com>, Ben Greear <greearb@candelatech.com>,
Al Boldi <a1426z@gawab.com>,
netdev@vger.kernel.org, linux-net@vger.kernel.org
Subject: Re: [RFC] ip / ifconfig redesign
Date: Mon, 05 Dec 2005 17:19:01 -0500 [thread overview]
Message-ID: <4394BCD5.1060505@psc.edu> (raw)
In-Reply-To: <43947FEB.7020504@unfix.org>
Jeroen Massar wrote:
> I wonder how many RFC's it violates. An interface must only answer ARP's
> on the interface that it is configured on, not anything else.
Not true. See RFC 1122, section 3.3.4. The standard leaves this
decision up to the implementation, for good reason.
From 1122 (note the use of MAY, not MUST or SHOULD):
"
There are two key requirement issues related to multihoming:
(A) A host MAY silently discard an incoming datagram whose
destination address does not correspond to the physical
interface through which it is received.
(B) A host MAY restrict itself to sending (non-source-
routed) IP datagrams only through the physical
interface that corresponds to the IP source address of
the datagrams.
"
This topic has been discussed many times on a variety of mailing lists.
I think the best way to do this is to make the behavior configurable,
which Linux currently does.
-John
next prev parent reply other threads:[~2005-12-05 22:19 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-02 19:53 [RFC] ip / ifconfig redesign Al Boldi
2005-12-02 19:59 ` Pekka Savola
2005-12-02 20:08 ` Ben Greear
2005-12-02 20:38 ` linux-os (Dick Johnson)
2005-12-02 22:49 ` Jesper Juhl
2005-12-10 18:51 ` Stefan Smietanowski
2005-12-02 21:19 ` Jan-Benedict Glaw
2005-12-08 10:15 ` Eric W. Biederman
2005-12-02 22:40 ` Jeff V. Merkey
2005-12-03 13:46 ` Al Boldi
2005-12-03 18:33 ` Ben Greear
2005-12-03 20:25 ` Al Boldi
2005-12-05 14:01 ` John W. Linville
2005-12-05 14:20 ` Jeroen Massar
2005-12-05 17:40 ` Marc Singer
2005-12-05 17:59 ` Jeroen Massar
2005-12-05 20:56 ` Marc Singer
2005-12-05 22:19 ` John Heffner [this message]
2005-12-05 22:28 ` Rick Jones
2005-12-05 22:30 ` John Heffner
2005-12-05 22:43 ` Rick Jones
2005-12-05 23:03 ` John Heffner
2005-12-06 5:13 ` Marc Singer
2005-12-05 22:48 ` Jeroen Massar
2005-12-05 22:56 ` John Heffner
2005-12-05 23:10 ` Jeroen Massar
2005-12-06 5:18 ` Marc Singer
2005-12-05 18:00 ` Ben Greear
2005-12-05 20:10 ` John W. Linville
2005-12-05 21:03 ` Marc Singer
2005-12-05 20:48 ` Al Boldi
2005-12-11 4:59 ` Bernd Eckenfels
2005-12-14 14:19 ` Al Boldi
[not found] <447BB19E14004A4388CB9A864D2BA7630DF693@hq-ex-6.brocade.com>
2005-12-03 14:58 ` Jan-Benedict Glaw
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