From owner-freebsd-hackers Wed Jan 24 6:58:32 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from nyapp002.mediaondemand.com (mailhost.mediaondemand.com [208.184.36.78]) by hub.freebsd.org (Postfix) with ESMTP id 0AF5A37B699 for ; Wed, 24 Jan 2001 06:58:16 -0800 (PST) Received: from nywst536 (nywst536.newyork.mod [192.168.10.35]) by nyapp002.mediaondemand.com (8.11.2/8.11.2) with SMTP id f0OEwEn03417; Wed, 24 Jan 2001 09:58:14 -0500 (EST) Message-ID: <000e01c08615$ddda4b80$230aa8c0@newyork.mod> From: "Dejvid Zaninovic" To: Cc: Subject: Re: IP Address Overtaking Date: Wed, 24 Jan 2001 09:56:40 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > just a suggestion: In production environments it is a must to also > take over the cluster partner's mac address. Something that > would make a nice plus to your script. I was thinking about that.... I don't see that this is a must in production environment because when you assign a new virtual address to the interface broadcast is done and all hosts that have that ip in the arp cache are updated. It is clearly stated in arp protocol that ip address can be moved from host to host, that is why arp spoofing works. The problem with mac address is that you can have only one per interface and I would like to have more virtual addresses per interface. If I wanted to have five ip addresses per host I would need to have five mac addresses at the same time on the same interface which is as far as I know not so possible, especially using only shell tools. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message