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The Design and Implementation of the FreeBSD® Operating System, Second Edition by George V. Neville-Neil, Robert N.M. Watson, Marshall Kirk McKusick

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Chapter 13. Network-Layer Protocols

Chapter 12 presented the network-communications architecture of FreeBSD. This chapter examines the network protocols implemented within this framework. The FreeBSD system supports several major communication domains including IPv4, IPv6, Xerox Network Systems (NS), ISO/OSI, and the local domain (formerly known as the UNIX domain). The local domain does not include network protocols because it operates entirely within a single system. This chapter studies the portions of the TCP/IP protocols that implement the network-layer software. The protocols that make up the network layer of the TCP/IP software are responsible for moving packets between intermediate hosts in the Internet. Because the TCP/IP protocols implement ...

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