Hmm..thanks guys. I am stumped as even with 100K states set in pf, the
box was dying. Dying meaning I couldn't ssh (intermittent) , carp was
failing etc, relayd (intermittent failure on the checks etc).
Using pftop I saw that there was only slight increase in states (around
15-20K - total). As I tried bunch of things which didn't work. When
the traffic was around 8-10K (total) states then the box was responding
perfectly well. I am on 4.7 for amd64. This has now happened around 4
times and I am totally clueless now as to what should my next
troubleshooting step be like. Wondering if there is some issue with 4.7
amd64.