From owner-freebsd-net Sat Oct 9 9:50:55 1999 Delivered-To: freebsd-net@freebsd.org Received: from cs.rice.edu (cs.rice.edu [128.42.1.30]) by hub.freebsd.org (Postfix) with ESMTP id 7E84114BF3 for ; Sat, 9 Oct 1999 09:50:52 -0700 (PDT) (envelope-from aron@cs.rice.edu) Received: (from aron@localhost) by cs.rice.edu (8.9.0/8.9.0) id LAA08261; Sat, 9 Oct 1999 11:50:51 -0500 (CDT) From: Mohit Aron Message-Id: <199910091650.LAA08261@cs.rice.edu> Subject: Re: arp errors on machines with two interfaces To: freebsd-net@freebsd.org, justin@apple.com Date: Sat, 9 Oct 1999 11:50:51 -0500 (CDT) Cc: alc@cs.rice.edu (Alan Cox), wollman@khavrinen.lcs.mit.edu X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > Garrett is correct, and sarcasm doesn't help. You can't have more > than one interface on a given wire, with the same subnet address, > using IP. Them's the protocol rules. > Actually I am using different subnet addresses on the two interfaces. One is 128.42.3.77 and the other is 192.168.3.77. There are other machines in the dept running Solaris and other OS's that are connected in similar fashions. However, the Ethernet is switched and any broadcast by anyone is going to be seen by all interfaces connected to it. > There are ways around this, but I don't know if FreeBSD supports > them (check the archives). One involves "bonding" multiple > interfaces as a single "uber channel" to the switch. It requires > support in the switch, of course. The bonding lets you load balance > across multiple interfaces (which look like a single interface, with > a single IP address [or, more acurately, subnet], to the outside > whirled). I don't have control over the hardware. But here's a possibility - wouldn't it be better if this error message generation in FreeBSD is turned off if the packet is an arp broadcast ? Like I showed in my earlier mail, the problem only happens due to arp broadcasts. - Mohit To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message