| 摘要 |
The invention relates to a mechanism for providing mobility for IPv4 traffic using Mobile IPv6 protocol. Bindings are maintained in a first network node, each binding being an association of the home address with the care-of address of the mobile node. When the care-of address changes, the mobile node sends a binding update packet, said binding update packet including the new care-of address and the home address of the mobile node. A binding between the IPv4 home address and the IPv6 care-of address of the mobile node is notified in the packet by inserting in the packet an IPv6 address with the IPv4 home address embedded in it. When said binding has been created, IPv4 packets can be forwarded to the mobile node through an IPv4-in-IPv6 tunnel.
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