Routing in a data communication network

An access node comprising:

• a receiving function receiving at least one first Internet Protocol (IP) message from a mobile node, wherein said at least one first IP message comprises a mobile node address capable of use for route maintenance to deliver data to and/or from said mobile node;
• and
• a processor, operably coupled to said receiving function, wherein said processor analyses said at least one first IP message, to determine a route to deliver data to and/or from said mobile node and triggers a transmission of one or more route update message from said access node to a number of network elements between said access node and a DHCP server in the IP based data network.

A dynamic host configuration protocol DHCP Server comprising:

• a receiving function for receiving at least one first Internet Protocol (IP) message from a mobile node through a first access node, wherein said at least one first IP message comprises a number of addresses used for route maintenance to deliver data to and/or from said mobile node via said first access node;
• and
• a processor, operably coupled to said receiving function, wherein said processor analyses said at least one first IP message, to determine a route to deliver data to and/or from said mobile node and triggers a transmission of one or more route update message from said DHCP server to a number of network elements between said access node and said DHCP server in the IP based data network.

(canceled)

(canceled)