The paper introduces Mobile IPv6, a protocol designed to enable transparent routing of IPv6 packets to mobile nodes, allowing them to maintain communication while moving between different IP subnets. Each mobile node is identified by its home address, which remains constant regardless of its current location. When away from its home subnet, a mobile node is associated with a care-of address, which indicates its current location. The protocol ensures that any IPv6 node can learn and cache the care-of address of a mobile node, enabling direct routing of packets to the mobile node using an IPv6 Routing header. Key features of Mobile IPv6 include: - **Binding Cache**: IPv6 nodes maintain a cache of mobile node bindings, including the home address and care-of address. - **Binding Update and Binding Acknowledgement Options**: These options allow the home agent and correspondent nodes to learn and cache the mobile node's binding, facilitating direct routing of packets. - **Home Agent**: A router on the mobile node's home subnet intercepts packets addressed to the mobile node's home address and tunnels them to the care-of address. - **Correspondent Node**: Correspondent nodes use the Binding Cache to route packets directly to the mobile node's care-of address, bypassing the home agent. - **Security**: Packets carrying Binding Updates must include an IPv6 Authentication header to ensure authenticity and prevent remote redirection attacks. The paper also discusses the operation of mobile nodes, home agents, and correspondent nodes, as well as security considerations and conclusions.The paper introduces Mobile IPv6, a protocol designed to enable transparent routing of IPv6 packets to mobile nodes, allowing them to maintain communication while moving between different IP subnets. Each mobile node is identified by its home address, which remains constant regardless of its current location. When away from its home subnet, a mobile node is associated with a care-of address, which indicates its current location. The protocol ensures that any IPv6 node can learn and cache the care-of address of a mobile node, enabling direct routing of packets to the mobile node using an IPv6 Routing header. Key features of Mobile IPv6 include: - **Binding Cache**: IPv6 nodes maintain a cache of mobile node bindings, including the home address and care-of address. - **Binding Update and Binding Acknowledgement Options**: These options allow the home agent and correspondent nodes to learn and cache the mobile node's binding, facilitating direct routing of packets. - **Home Agent**: A router on the mobile node's home subnet intercepts packets addressed to the mobile node's home address and tunnels them to the care-of address. - **Correspondent Node**: Correspondent nodes use the Binding Cache to route packets directly to the mobile node's care-of address, bypassing the home agent. - **Security**: Packets carrying Binding Updates must include an IPv6 Authentication header to ensure authenticity and prevent remote redirection attacks. The paper also discusses the operation of mobile nodes, home agents, and correspondent nodes, as well as security considerations and conclusions.