EFFICIENT ADDRESS-SPACE EXTENSION TO PSEUDO MULTI-HOMED HOSTS

摘要

A residential gateway (130) interfaces in-home hosts (140) to the public Internet without performing address or port translation. Each in-home host is allocated a public address (212) of the gateway and optionally one or more ports (220). The in-home host generates a lower-level version of the gateway IP address for outgoing packets (S370). The gateway maintains a lookup table (720) for public-to-private IP address conversion for packets incoming from the Internet, and finds the lower-level counterpart of the IP address (730). Packets to go out or packets that have arrived are encapsulated without any address or port translation being performed.