. . . > rdr fxp1 1.2.3.4/32 port 1234 -> 10.10.10.10 port 10000 > rdr fxp0 10.10.10.10/32 port 10000 -> 1.2.3.4 port 1234 > > It's probably a question for the IP Filter mailing list. Try a > search of the archives on www.false.net. will test it and post if it works