ext_if = "em0"
stf_if = "stf0"
tcp6_services ="{80,53,6667,6668,6669}"
udp6_services = "{ 53,6667,6668,6669}"

#-- IPv6 6rd Sakura Setting Start --
pass in quick on $ext_if inet proto ipv6 from any to ($ext_if) keep state
pass in quick on $stf_if inet6 proto tcp from any to ($stf_if) port $tcp6_services flags S/SA keep state
pass in quick on $stf_if inet6 proto udp from any to ($stf_if) port $udp6_services keep state
pass in quick on $stf_if inet6 proto icmp6 all icmp6-type $icmp6_types keep state
block drop in log quick on $stf_if proto icmp all
block drop in log quick on $stf_if proto tcp all
block drop in log quick on $stf_if proto udp all
#-- IPv6 6rd Sakura Setting End --