Configuring multiple interface card in one box

[Hèrvé Simplice van der Eijk]

hallo sir,

I have the privilge to use freebsd 5.4 release
I have 3 network interface card installed in my box

fxp0 with ip address 192.168.0.1 ether mac address: 00:90:27:ce:c3:00
xl0 with ip address 192.168.0.2 ether mac address: 00:10:4b:8c:9b:73
vx0 with ip address 192.168.0.3 ether mac address: 00:20:af:f7:5f:83

and default router is 192.168.0.10

Problem:
pop up message
feb 21 17:43:53 sun kernel: arp 192.168.0.10 is on fxp0 but got reply from 
46:04:ed:10:08:33 on xl0
feb 21 17:44:58 sun kernel: arp 192.168.0.10 is on fxp0 but got reply from 
46:04:ed:10:08:33 on vx0

please can somebody tell me what's going on and how I can fix it

thank you in advanced.

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