ARRANGEMENT FOR REACHING IPv4 PUBLIC NETWORK NODES BY A NODE IN AN IPv4 PRIVATE NETWORK VIA AN IPv6 ACCESS NETWORK

摘要

An IPv4 node (18 or 20) is able to send an IPv4 packet to an IPv4 destination (22) via an IPv6 access network (14), based on translation (30 or 32) of the IPv4 packet into an IPv6 packet for transmission via the IPv6 access network (14). The IPv4 packet is translated into the IPv6 packet by a local gateway (30). The IPv6 packet has an IPv6 source address that includes a prescribed address prefix (34) assigned to the local gateway (30), and an IPv4 address of the IPv4 node (18 or 20). The IPv6 packet also includes an IPv6 destination address that includes a second address prefix (38) assigned to a remote gateway (32), and a second IPv4 adress of the IPv4 destination. The IPv6 packet is converted by the remote gateway (32) into an IPv4 packet for reception by the IPv4 destination via an IPv4 network (16).