rule FORWARD -p IPv6 --ip6-protocol ipv6-icmp --ip6-icmp-type router-solicitation -j OUT_ONLY
rule OUTPUT -p IPv6 --ip6-protocol ipv6-icmp --ip6-icmp-type router-solicitation -j OUT_ONLY

rule FORWARD -p IPv6 --ip6-protocol ipv6-icmp --ip6-icmp-type router-advertisement -j IN_ONLY
rule INPUT -p IPv6 --ip6-protocol ipv6-icmp --ip6-icmp-type router-advertisement -j IN_ONLY