rule FORWARD -p IPv6 --ip6-protocol udp --ip6-destination-port 546 -j OUT_ONLY
rule OUTPUT -p IPv6 --ip6-protocol udp --ip6-destination-port 546 -j OUT_ONLY

rule FORWARD -p IPv6 --ip6-protocol udp --ip6-destination-port 547 -j IN_ONLY
rule INPUT -p IPv6 --ip6-protocol udp --ip6-destination-port 547 -j IN_ONLY