pf & NAT issue

[Bakul Shah]

pf seems to drop NAT connections quite a bit. This seems to
happen much more frequently if there are delays involved (slow
server or interactive use). Almost seems like pf losing
track of NATted connections due to an uninitialized
variable....  Often a retry or two works. Connecting from
outside to forwarded connections to NATTED hosts works fine.

This problem started after ungrading to freebsd-10. Is there a
bug fix in works or a known work around (other than using ipfw
or reverting to 9, which I don't want to do)?

Thanks!
Bakul