1 1<<ICMP_ECHOREPLY
2 1<<ICMP_DEST_UNREACH
3 1<<ICMP_SOURCE_QUENCH
4 1<<ICMP_REDIRECT
5 1<<ICMP_ECHO
6 1<<ICMP_TIME_EXCEEDED
7 1<<ICMP_PARAMETERPROB
8 1<<ICMP_TIMESTAMP
9 1<<ICMP_TIMESTAMPREPLY
10 1<<ICMP_INFO_REQUEST
11 1<<ICMP_INFO_REPLY
12 1<<ICMP_ADDRESS
13 1<<ICMP_ADDRESSREPLY
14