pf11.in revision 1.3 
1pass in inet proto icmp all icmp-type 0
2pass in inet proto icmp all icmp-type 0 code 0
3pass in inet proto icmp all icmp-type 1
4pass in inet proto icmp all icmp-type 1 code 1
5pass in inet6 proto ipv6-icmp all icmp6-type 0
6pass in inet6 proto ipv6-icmp all icmp6-type 0 code 0
7pass in inet6 proto ipv6-icmp all icmp6-type 1
8pass in inet6 proto ipv6-icmp all icmp6-type 1 code 1
9block in inet proto icmp all icmp-type 0
10block in inet proto icmp all icmp-type 0 code 0
11block in inet proto icmp all icmp-type 1
12block in inet proto icmp all icmp-type 1 code 1
13block in inet6 proto ipv6-icmp all icmp6-type 0
14block in inet6 proto ipv6-icmp all icmp6-type 0 code 0
15block in inet6 proto ipv6-icmp all icmp6-type 1
16block in inet6 proto ipv6-icmp all icmp6-type 1 code 1
17pass in inet proto icmp all icmp-type unreach code needfrag
18pass in inet6 proto ipv6-icmp all icmp6-type timex code reassemb
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