Date: Fri, 22 Oct 1999 22:46:54 -0400 (EDT) From: "Crist J. Clark" <cjc@cc942873-a.ewndsr1.nj.home.com> To: ian@pnpa.net (Ian) Cc: freebsd-questions@FreeBSD.ORG (freebsd-questions@FreeBSD.ORG) Subject: Re: kernel arp messages Message-ID: <199910230246.WAA34344@cc942873-a.ewndsr1.nj.home.com> In-Reply-To: <3810A41D.D588E6C3@pnpa.net> from Ian at "Oct 22, 1999 01:51:25 pm"
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Ian wrote, > Hi all > I have a freebsd 3.3 machine that i just setup with 2 nics with the > hopes that of using it as a gateway / router for an internal lan.. > but i get these errors in my logs and the logs of my server (bsdi 4.0) > pn0 is setup to be on the outside network, pn1 is the internal > what could be causing something like this? > This is happening once every 30 - 60 secs > > arp: 209.158.48.1 is on pn0 but got reply from 00:10:7b:80:04:40 on pn1 > arp: 209.158.48.1 is on pn0 but got reply from 00:10:7b:80:04:40 on pn1 > arp: 209.158.48.1 is on pn0 but got reply from 00:10:7b:80:04:40 on pn1 > arp: 209.158.48.1 is on pn0 but got reply from 00:10:7b:80:04:40 on pn1 > arp: 209.158.48.2 is on pn0 but got reply from 00:90:27:84:e8:40 on pn1 > arp: 209.158.48.1 is on pn0 but got reply from 00:10:7b:80:04:40 on pn1 > arp: 209.158.48.1 is on pn0 but got reply from 00:10:7b:80:04:40 on pn1 > arp: 209.158.48.1 is on pn0 but got reply from 00:10:7b:80:04:40 on pn1 > arp: 209.158.48.1 is on pn0 but got reply from 00:10:7b:80:04:40 on pn1 > arp: 209.158.48.1 is on pn0 but got reply from 00:10:7b:80:04:40 on pn1 > arp: 209.158.48.2 is on pn0 but got reply from 00:90:27:84:e8:40 on pn1 > arp: 209.158.48.2 is on pn0 but got reply from 00:90:27:84:e8:40 on pn1 > arp: 209.158.48.1 is on pn0 but got reply from 00:10:7b:80:04:40 on pn1 The most frequent cause is when someone (for whatever reason) attaches two NICs to one physical network and gives them different subnets. In your case, I assume that pn0 is on the 209.158.48.0/x network, but for whatever reason, pn1 is hearing arp replies for those addresses (even though it is not on 209.158.48.0/x). So, are pn0 and pn1 really on different networks? If they are, is there a misconfigured machine or two on pn1 network that have the wrong IP address? If you still can't figure it out, forward info on the physical setup of your network, ifconfig -a output, and netstat -rn. HTH. -- Crist J. Clark cjclark@home.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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