The ARS lib is useless without knowledge about TCP/IP.
This are the RFCs you need to learn what you need, or to
refresh your memory.

FILENAME		RFC TITLE
--------		---------

rfc768.txt		User Datagram Protocol
rfc791.txt		INTERNET PROTOCOL
rfc792.txt		INTERNET CONTROL MESSAGE PROTOCOL
rfc793.txt		TRANSMISSION CONTROL PROTOCOL
rfc950.txt		Internet Standard Subnetting Procedure
rfc1072.txt		TCP Extensions for Long-Delay Paths
rfc1112.txt		Host Extensions for IP Multicasting
rfc1323.txt		TCP Extensions for High Performance
rfc2018.txt		TCP Selective Acknowledgment Options
rfc2236.txt		Internet Group Management Protocol, Version 2
rfc2460.txt		Internet Protocol, Version 6 (IPv6)

Note that:

rfc950			Contains information about ICMP extensions
rfc1072			Contains information about TCP options
rfc1112			Contains information about the IGMP protocol
