How to force full sync using pfsync?

[David DeSimone]

I have a strange problem between two PF firewalls in a cluster, with
pfsync enabled.

When I reboot one of the cluster members, the state tables do
synchronize and populate with some of the same connection states, but
not all of them.

In particular, long-lived, extant connections seem to never show up in
the rebooted member's state table.

I figured that doing ifconfig down/up would send some sort of "full
sync" message between the two members, to cause the entire state table
to be sent in bulk.  But, no such behavior seems to come about.

It seems to me that only connection updates are being sent between the
cluster members.  There is no "full sync" done at startup.

Do I misunderstand?  Is there a misconfiguration that can lead to this
strange behavior?

-- 
David DeSimone == Network Admin == fox at verio.net
  "It took me fifteen years to discover that I had no
   talent for writing, but I couldn't give it up because
   by that time I was too famous.  -- Robert Benchley