Date: Mon, 25 Sep 2000 16:17:43 -0700 (MST) From: "Chad R. Larson" <chad@DCFinc.com> To: webmaster@powerusersbbs.com (Ted) Cc: melange@yip.org, freebsd-stable@FreeBSD.ORG Subject: Re: arp Message-ID: <200009252317.QAA22784@freeway.dcfinc.com> In-Reply-To: <39CF4E80.855DE0D7@powerusersbbs.com> from Ted at "Sep 25, 0 09:09:20 am"
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> I did none of my devices have that address. The other server has > another mac address with the same error massage and another unkown MAC > address. Everythings running fine except for the messages. I have > remote logging and there seems to be no unkown logins etc. I'm > stumped. Could this be an IPv6 error? No, someone out on your cable segment has mis-configured his firewall/router to put the private addresses on the public network. When your system "ifconfig"s its interface, it sends out an ARP for it's own address. It does this for two reasons. One is to update the ARP caches on all other machines on your collision domain. The other is to see if some other machine thinks =it= owns that IP address. You're tripping over that second problem. Put another way, there are more than one machine (your's being one) in the collision domain that think they own the 192.168.1.1 IP address, and the other one has a MAC address of 00:10:b5:6c:33:83. I say on your cable segment, because the LANcity modem acts as a MAC-level bridge. I don't think the ADSL modem will. Do you have a firewall between your LAN and the cable modem? It shouldn't let any of the private (RFC-1631) addresses in. -crl -- Chad R. Larson (CRL15) 602-953-1392 Brother, can you paradigm? chad@dcfinc.com chad@larsons.org larson1@home.net DCF, Inc. - 14623 North 49th Place, Scottsdale, Arizona 85254-2207 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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