Greetings, I think the "global" option (after "overload <table> flush") has been omitted in the BNF grammar part of pf.conf(5)
Regards, William Index: pf.conf.5 =================================================================== RCS file: /cvs/src/share/man/man5/pf.conf.5,v retrieving revision 1.506 diff -u -p -r1.506 pf.conf.5 --- pf.conf.5 16 Aug 2011 14:48:39 -0000 1.506 +++ pf.conf.5 18 Aug 2011 06:53:00 -0000 @@ -2827,7 +2827,7 @@ state-opt = ( "max" number | "no-sy "max-src-nodes" number | "max-src-states" number | "max-src-conn" number | "max-src-conn-rate" number "/" number | - "overload" "\*(Lt" string "\*(Gt" [ "flush" ] | + "overload" "\*(Lt" string "\*(Gt" [ "flush" [ "global" ] ] | "if-bound" | "floating" ) timeout-list = timeout [ [ "," ] timeout-list ]