2 NICs, SMP, weird kernel ARP messages

[Thomas Franck]

Hi there...!

I'm a long-time reader, but this is my first post.. :)

I set up our old server (an Acer Altos 11000) with Release 6.0 
two days ago (cvsup'ed and installed new world and custom kernel 
(see below)) and I keep getting a huge amounts of these message:

-----
Feb 17 12:39:46 scorpio kernel: arp: 192.168.1.103 is on fxp0 
but got reply from 00:10:dc:7b:91:12 on re0
Feb 17 12:40:40 scorpio kernel: arp: 192.168.1.254 is on fxp0 
but got reply from 00:a0:c5:44:a0:30 on re0
Feb 17 12:41:50 scorpio kernel: arp: 192.168.1.103 is on fxp0 
but got reply from 00:10:dc:7b:91:12 on re0
Feb 17 12:42:16 scorpio kernel: arp: 192.168.1.103 is on fxp0 
but got reply from 00:10:dc:7b:91:12 on re0
Feb 17 12:42:16 scorpio kernel: arp: 192.168.1.254 is on fxp0 
but got reply from 00:a0:c5:44:a0:30 on re0
Feb 17 12:44:34 scorpio kernel: arp: 192.168.1.103 is on fxp0 
but got reply from 00:10:dc:7b:91:12 on re0
Feb 17 12:46:45 scorpio kernel: arp: 192.168.1.103 is on fxp0 
but got reply from 00:10:dc:7b:91:12 on re0
-----

There's an fxp onboard and an added realtek Gigabit card.
They are configured for two different subnets but are connected 
to the same physical network.
The re0 is on the 192.168.100.0/24 network and the fxp0 on the 
192.168.1.0/24 network.. the .254 is our gateway and the .103 is 
me..

this is the ifconfig output of the cards:
-----
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        options=18<VLAN_MTU,VLAN_HWTAGGING>
        inet6 fe80::240:f4ff:fed1:cee7%re0 prefixlen 64 scopeid 
0x1
        inet 192.168.100.15 netmask 0xffffff00 broadcast 
192.168.100.255
        ether 00:40:f4:d1:ce:e7
        media: Ethernet autoselect (1000baseTX <full-duplex>)
        status: active
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 
1500
        options=8<VLAN_MTU>
        inet6 fe80::200:e2ff:fe22:f419%fxp0 prefixlen 64 scopeid 
0x2
        inet 192.168.1.15 netmask 0xffffff00 broadcast 
192.168.1.255
        ether 00:00:e2:22:f4:19
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
-----

I compiled a custom kernel for SMP support (and commented out a 
lot devices we don't have (other SCSI and RAID controllers))

It doesn't seem to affect the function of the server, but it's 
mighty irritating and blows up the logs a lot... plus, I don't 
think it's supposed to show this behaviour.. :)

I've going through the archives & web but the threads I found 
didn't fit my case.. :(

Any ideas about that? Your help is very appreciated..
thank you.. :)
- Thomas