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Arrangement for traversing an IPv4 network by IPv6 mobile routers

  • US 7,031,328 B2
  • Filed: 03/10/2003
  • Issued: 04/18/2006
  • Est. Priority Date: 03/10/2003
  • Status: Active Grant
First Claim
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1. A method in an IPv6 mobile router, the method including:

  • first generating an IPv6 tag address that includes a prescribed protocol identifier for an IPv6 gateway configured for transferring packets between an IPv4 network and an IPv6 network, and a public IPv4 gateway address for the IPv6 gateway;

    second generating an IPv6 packet having a source address field that specifies the IPv6 tag address, and a reverse routing header that specifies a home address;

    encapsulating the IPv6 packet in an IPv4 packet having an IPv4 header including a destination address field that specifies the public gateway IPv4 address and a source address field specifying a mobile router IPv4 address, the mobile router IPv4 address used by the IPv6 mobile router for accessing the IPv6 gateway via the IPv4 network; and

    outputting the IPv4 packet to the IPv6 gateway via the IPv4 network, for transfer of the IPv6 packet onto the IPv6 network.

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