rl interface drops out occasionally

[Sumit Shah]

FreeBSD hackers,

I have a FreeBSD 4.9 server with Abit AT7 Max motherboard which 
includes a built-in rl network interface.  I've noticed that every now 
and then the network interface drops out.  I can ifconfig destroy and 
then create it again and the network interface comes back.  This 
machine serves nfs/smb/rsync exclusively and nothing more (2-3 gigs of 
traffic is moved per day).  Any ideas on how to track down what the 
problem is?  dmesg does not show anything unusual.

Thanks,
Sumit


PS Here is what ifconfig rl shows:

rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
         inet  x.x.x.74 netmask 0xffffff00 broadcast x.x.x.255
         ether 00:50:8d:a6:2a:34
         media: Ethernet autoselect (100baseTX <full-duplex>)
         status: active