Problem with pfSense and Linksys PAP2T?

[gnail]

I have set up a pfSense box without problem but my Linksys PAP2T VoIP adapter complains of unable to register in sporadic intervals, from a week to a day. Restarting of the PAP2T doesn't help but restarting the pfsense server does, so I think this is a pfSense problem. I have done some packet capture and it seems that the PAP2T isn't receiving replies to its requests. Also, sometimes the error

[filter_load]There were error(s) loading the rules: pfctl: DIOCADDRULE: Device busy The line in question reads [ DIOCADDRULE]
```pops up around the same time as the error with the PAP2T, so I think they're related is well.

Google haven't been very helpful with that message (goes to [http://forum.pfsense.org/index.php?topic=4182.0](http://forum.pfsense.org/index.php?topic=4182.0), a dead post), so I am wondering if there are anybody here that can help me with this problem? Thanks.