Subject: Unexpected ARP messages on console
To: None <netbsd-users@netbsd.org>
From: Donald J. Armstrong <donnie@cross-works.com>
List: netbsd-users
Date: 10/06/2003 08:52:38
Hello,

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

I have a obsd box running nat/fw, two nics an ipf. =20
internal =3D "xl0" plugged into LAN switch
external =3D "xl1" plugged into DMZ hub

Also a linux webserver (forward off, only port 80 on eth1)=20
internal =3D "eth0" (HWaddr 00:E0:29:88:EE:3E) plugged into LAN switch
(same as xl0)=20
External =3D "eth1" plugged into DMZ hub (same as xl1)

It appears that the Rh box is arping the internal nic on the external
subnet. =20
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=20
Oct  3 17:10:08 fw last message repeated 11 times=20
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       -
      ----------------------------
  =20
Thx,

Donnie Armstrong
armstrong@cross-works.com