1IPPROTO_IP
2IPPROTO_ICMP
3IPPROTO_TCP
4IPPROTO_UDP
5IPPROTO_IGMP
6IPPROTO_GGP
7IPPROTO_IPIP
8IPPROTO_EGP
9IPPROTO_PUP
10IPPROTO_IDP
11IPPROTO_TP
12IPPROTO_DCCP
13IPPROTO_IPV6
14IPPROTO_ROUTING
15IPPROTO_FRAGMENT
16IPPROTO_RSVP
17IPPROTO_GRE
18IPPROTO_ESP
19IPPROTO_AH
20IPPROTO_ICMPV6
21IPPROTO_NONE
22IPPROTO_DSTOPTS
23IPPROTO_HELLO
24IPPROTO_ND
25IPPROTO_MTP
26IPPROTO_ENCAP
27IPPROTO_PIM
28IPPROTO_COMP
29IPPROTO_SCTP
30IPPROTO_UDPLITE
31IPPROTO_MPLS
32IPPROTO_RAW
33IPPROTO_MAX
34