Patent ID: 7653077
Filing Date: 2010-01-26
Classification: H04L

Abstract:
1. A method of rendering communications between first and second devices, said first device using Internet Protocol version 6 (IPv6) as a communication protocol, and said second device using Internet Protocol version 4 (IPv4) as a communication protocol, comprising the steps of: receiving from said first device, an IPv6 packet having an IPv6 header; judging whether an IPv4-mapped-IPv6 address is stored in a destination address of said IPv6 header; when said judging step judges that the IPv4-mapped-IPv6 address is stored, extracting lower 32 bits from said IPv4-mapped-IPv6 address to create the extracted lower 32 bits as a translated IPv4 address; translating said IPv6 header into an IPv4 header including said translated IPv4 address as a destination address; creating an IPv4 packet having said translated IPv4 header from said IPv6 packet; and sending said created IPv4 packet to said second device.