1# return variants 2pass in inet proto icmp all 3pass in inet6 proto icmp6 all 4block in inet proto icmp all 5block in inet6 proto icmp6 all 6block return-rst in inet proto tcp all 7block return-rst in inet6 proto tcp all 8block return-rst(ttl 10) in inet proto tcp all 9block return-rst(ttl 10) in inet6 proto tcp all 10block return-icmp in inet proto icmp all 11block return-icmp(0) in inet proto icmp all 12block return-icmp(net-unr) in inet proto icmp all 13block return-icmp(5) in inet proto icmp all 14block return-icmp(srcfail) in inet proto icmp all 15block return-icmp(10) in inet proto icmp all 16block return-icmp(host-prohib) in inet proto icmp all 17block return-icmp(15) in inet proto icmp all 18block return-icmp(cutoff-preced) in inet proto icmp all 19block return-icmp6 in inet6 proto icmp6 all 20block return-icmp6(0) in inet6 proto icmp6 all 21block return-icmp6(noroute-unr) in inet6 proto icmp6 all 22block return-icmp6(1) in inet6 proto icmp6 all 23block return-icmp6(admin-unr) in inet6 proto icmp6 all 24block return-icmp6(2) in inet6 proto icmp6 all 25block return-icmp6(beyond-unr) in inet6 proto icmp6 all 26block return-icmp6(3) in inet6 proto icmp6 all 27block return-icmp6(addr-unr) in inet6 proto icmp6 all 28block return-icmp6(4) in inet6 proto icmp6 all 29block return-icmp6(port-unr) in inet6 proto icmp6 all 30block return-icmp(5, 1) in all 31block return-icmp(srcfail, admin-unr) in all 32