bridge and pf working a few seconds only

[Cedric Tabary]

I am using freebsd RELENG_6 (cvsuped 2 days ago) with bridge between em2
and em3. (dell PE 1850, no smp)

The firewall is firewalling (keeping states) during a few seconds and
then stops learning states and start passing all !!!
pfctl -s state becomes empty a few seconds later when states expires
pfctl -d then pfctl -e does nothing

the only way to reenable it is to ifconfig down and up the bridge0
interface, and a few seconds later it stops working again !

I can provide more details in private mails if you want ...

Cédric