Date: Thu, 18 Oct 2001 07:49:01 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: "Jose M. Alcaide" <jose@we.lc.ehu.es>, Beech Rintoul <akbeech@anchoragerescue.org>, current@FreeBSD.org, net@FreeBSD.org Subject: Re: arp: <some ether addr> is using my IP address 0.0.0.0! ??!?!? Message-ID: <3BCEEBDD.46121235@mindspring.com> References: <Pine.BSF.4.21.0110171211230.65297-100000@InterJet.elischer.org> <20011018065526.F3D4DC8@nebula.anchoragerescue.org> <20011018115929.C921@v-ger.we.lc.ehu.es> <3BCEE9AD.6839DF3E@mindspring.com>
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To expand a little... > That said, it's probably a good idea to never ARP for 0.0.0.0, > since a "who has" in that case is a really dumb idea, since, > as weas pointed out, it's intended to mean "this host", in the > absence of an IP address (i.e. 0.0.0.0 is not an IP address, > it's a special value meaning "not an IP address"). It's probably also a good idea to make interfaces who have an IP of 0.0.0.0 _not_ respond to ARP requests for that address, and, just in case there are other idiots, we should also not give proxy ARP responses for that address, etiher. Ghah. I hate special cases... -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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