Subject: Re: Unexpected ARP messages on console
To: None <netbsd-users@netbsd.org>
From: Christos Zoulas <christos@zoulas.com>
List: netbsd-users
Date: 10/06/2003 15:21:30
In article <FFC0B6CD8EFAED48A3BFA579D609571A0DD14B@axe.lan.cross-works.com>,
Donald J. Armstrong <donnie@cross-works.com> wrote:

>Hello,
>
>I've posted to OBSD's mail list and noone answered. I hope someone here
>can help.

Yes, I've seen that with linux forever. It appears that it is sending arp
packets on the wrong interface... I am just ignoring them, they have not
bothered me enough to do something about it.

christos

>I have a obsd box running nat/fw, two nics an ipf.  
>internal = "xl0" plugged into LAN switch
>external = "xl1" plugged into DMZ hub
>
>Also a linux webserver (forward off, only port 80 on eth1) 
>internal = "eth0" (HWaddr 00:E0:29:88:EE:3E) plugged into LAN switch
>(same as xl0) 
>External = "eth1" plugged into DMZ hub (same as xl1)
>
>It appears that the Rh box is arping the internal nic on the external
>subnet.  
>Probably a routing problem.
>
>How to stop the messy console arp messages? (besides turning off rh
>8.0):
>arp: attempt to add entry for 67.95.33.44 on xl1 by 00:e0:29:88:ee:3e on
>xl0
>Oct  3 17:08:23 fw last message repeated 6 times 
>Oct  3 17:10:08 fw last message repeated 11 times 
>Oct  3 17:20:13 fw last message repeated 42 times
>
>                internet
>                   |
>                   |
>      ----------------------------
>      -         DMZ HUB          -
>      ----------------------------
>          ^               ^
>          |               |
>        [xl1]          [eth1]
>      ------------  ------------
>      - obsd     -  - rh 8.0   -
>      ------------  ------------
>        [xl0]          [eth0]
>          |               |
>          v               v
>      ----------------------------
>      -         LAN Switch       -
>      ----------------------------
>   
>Thx,
>
>Donnie Armstrong
>armstrong@cross-works.com