# netstat -w 1 -I igb0
input (igb0) output
packets errs idrops bytes packets errs bytes colls
2234 0 0 2833002 3 0 438 0
2335 0 0 2985460 2 0 276 0
2084 0 0 2683444 2 0 276 0

вот тут мы запустили генератор трафика:

167329 815 0 12691586 164060 0 9957756 0
682934 36015 0 43630516 679750 0 41026056 0
281507 391662 0 17883438 281012 0 16910796 0
11616 722946 0 744030 11161 0 697252 0
11635 724499 0 733012 12337 0 700608 0
10104 724763 0 647706 9304 0 606640 0
10283 729840 0 650180 10492 0 618602 0
10638 728780 0 677688 10512 0 638218 0
9981 726930 0 624052 9777 0 599936 0
8651 731821 0 544014 10395 0 520248 0
6874 731520 0 430682 5629 0 412150 0
65352 311866 0 3967958 66993 0 3937678 0

тут остановили:
2327 0 0 3004216 4 0 360 0

pf.conf:

set limit { states 4096000, frags 4096000, src-nodes 4096000 }


nat on igb0 from 10.0.0.0/8 to any -> 192.168.50.28

pass in quick on igb0
pass out quick on igb0

pass in quick on lo0
pass out quick on lo0