protocol_number,keyword,protocol_description
0,HOPOPT,IPv6 Hop-by-Hop Option
1,ICMP,Internet Control Message
2,IGMP,Internet Group Management
3,GGP,Gateway-to-Gateway
4,IPv4,IPv4 encapsulation
5,ST,Stream
6,TCP,Transmission Control
7,CBT,CBT
8,EGP,Exterior Gateway Protocol
9,IGP,any private interior gateway (used by Cisco for their IGRP)
10,BBN-RCC-MON,BBN RCC Monitoring
11,NVP-II,Network Voice Protocol
12,PUP,PUP