nft -f - <<__EOF table bridge filter { chain FORWARD { # Erlaube nur Router-Solicitation von CLIENT -> BATMAN # -p IPv6 --ip6-proto ipv6-icmp --ip6-icmp-type router-solicitation -j OUT_ONLY ether type ip6 icmpv6 type nd-router-solicit counter jump OUT_ONLY # Erlaube nur Router-Advertisment von BATMAN -> CLIENT # -p IPv6 --ip6-proto ipv6-icmp --ip6-icmp-type router-advertisement -j IN_ONLY ether type ip6 icmpv6 type nd-router-advert counter jump IN_ONLY } } __EOF