NetBSD-5.0.2/regress/sys/kern/ipf/regress/ni6.nat

rdr nf0 192.168.6.2 port 111 -> 192.168.7.1 port 111 udp proxy rpcbu
rdr nf0 192.168.6.2 port 111 -> 192.168.7.1 port 111 tcp proxy rpcbt
map qfe0 192.168.6.0/24 -> 192.168.7.2/32