So I've got OpenBGPd up and running fine on my pfSense 1.2.3-REL router (the 
GUI makes setting things up so ridiculously simple it's amazing! Thanks, guys!) 
but am now running into a secondary problem of some sort:

arplookup 192.139.69.161 failed: host is not on local network
arpresolve: can't allocate route for 192.139.69.161

where 192.139.69.161 is my BGP peer.  These messages appear several dozen times 
in a ~15-minute period.  This started shortly after I imported BGP routes into 
the kernel FIB.  BGPd had received ~11000 routes from my peer, I had the FIB 
import flag set to "no" in the GUI, and used "bgpctl fib couple" to manually 
import them.  Everything seemed to work OK, so I switched the flag to "yes", 
killed and restarted bgpd.  (Didn't want to reboot router in the middle of the 
day.)
Shortly (<2 minutes, I think) thereafter I noticed my routing table shrinking 
from 11k+ to ~270 to ~200 to ... etc.  Noticed these messages in system log.  
Ran tcpdump on that vlan, noticed traffic inbound FROM that host but absolutely 
nothing going out from the pfSense host.

Any idea a) what I did wrong, and b) what I do to fix it?  I probably won't be 
able to reboot until several hours from now.

Thanks,

-Adam Thompson
 Chief Technical Architect, C3A Inc.
 [email protected]<mailto:[email protected]>
 (204) 272-9628 / fax: (204) 272-8291

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