1# 2# Internet (IP) protocols 3# 4# @(#)protocols 5.1 (Berkeley) 04/17/89 5# 6ip 0 IP # internet protocol, pseudo protocol number 7icmp 1 ICMP # internet control message protocol 8ggp 3 GGP # gateway-gateway protocol 9tcp 6 TCP # transmission control protocol 10egp 8 EGP # exterior gateway protocol 11pup 12 PUP # PARC universal packet protocol 12udp 17 UDP # user datagram protocol 13hmp 20 HMP # host monitoring protocol 14xns-idp 22 XNS-IDP # Xerox NS IDP 15rdp 27 RDP # "reliable datagram" protocol 16