EVIL = "lo0"
GOOD = "{ lo0, lo1 }"
GOOD_NET = "{ 127.0.0.0/24, 10.0.1.0/24 }"
DEST_NET = "{ 1.2.3.4/25, 2.4.6.8/30 }"

rdr on lo0 proto tcp from any to 1.2.3.4/32 port 2222 -> 10.0.0.10 port 22   

# Test list processing
rdr on $GOOD proto tcp from $GOOD_NET to $DEST_NET port 21 -> 127.0.0.1 port 8021