Will someone please lead me in the right direction towards resolving the 
following network issue?

I just added a FreeBSD server to a LAN that consists of a router and 2 pc's, 
one of which is running Windows XP Pro and the other Windows Vista. The lan is 
connected to the Internet via a cable modem that goes through the router.
The router is set up to be the DHCP server. Now it is being assigned a 
non-unique IP address.

 Before adding the FreeBSD box to the mix, everybody was getting along fine 
(unique IP addresses were dynamically assigned to the pc's).

I connected the FreeBSD box to the router, selected "Configure additional 
network interfaces" from the sysinstall menu, selected "fxp0 Intel EtherExpress 
Pro/100B PCI Fast Ethernet card" from the top of the list and clicked "OK" to 
prompts to try to configure IPv6 and DCHP. When done, the Network Configuration 
dialog contained the following values (which I did not alter):

Host: dhcppc0
Domain: (the cable provider's domain name)
IPv4 Gateway:
Name server: (IP address of ISP's name server)
Configuration for Interface fxp0:
    IPv4 Address:
    Extra options: (blank)

Note that the Host field does not match the hostname of the FreeBSD box, which 
is named "SERVER" (real creative, huh?). I guess I should have changed the Host 
field to "SERVER", eh?

Then I got the following console messages on the FreeBSD server:

1) "Apr 25 13:33:19 SERVER kernel: arp 00:40:f4:47:fb:8e is using my IP address 
2) "dhcppc0# Apr 25 14:07:05 dhcpp0 kernel: arp: 00:40:f4:47:fb:8e is using my 
IP address xxx.xxx.x.xx!"

I ran "ipconfig /all" on both Windows boxes and found that the FreeBSD box is 
assigned the same IP address as the Windows XP box (which had that IP address 
FIRST). Why is the FreeBSD box being assigned a non-unique IP address?


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