Patent ID: 8379623
Filing Date: 2013-02-19
Classification: H04L,H04W

Abstract:
1. A method of processing an IPv6 packet received over an IPv4 based network, the method comprising: receiving at a communication device, from a mobile virtual private network (MVPN) server an internet protocol version 4 (IPv4) packet via an IPv4 network that is being communicated to a remote unit, the IPv4 packet including encapsulated data, an internet protocol version 6 (IPv6) header, an internet protocol security (IPsec) tunnel header identifying the IPv4 address of the MVPN server and the first IPv4 address of the remote unit to form the IPv6 packet, and a MVPN tunnel header identifying an IPv4 address of the MVPN server and a first IPv4 address of the remote unit, but not including an IPv6 to IPv4 transition header identifying an IPv4 address of a transition gateway and a second IPv4 address of the remote unit; and forming, by the communication device, an internet protocol version 6 (IPv6) packet by removing from the IPv4 packet the MVPN tunnel header and the IPsec tunnel header without having to remove the IPv6 to IPv4 transition header.