Data Packet Sending Method, Mobile Router, and Network Device

A mobile router, comprising:

• an interface
• a processor;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:
• obtain, using the interface, a first data packet from a first home address and sent by a mobile node (MN);
• determine, according to routing control policy information, whether to enable routing control for the first data packet, wherein the routing control policy information comprises indication information indicating whether routing control is enabled, and in a case in which the indication information indicates that routing control is enabled, the routing control policy information further comprises home address status information;
• back up the first data packet, in response to the interface determining to enable routing control for the first data packet
• send, using the interface, the backup first data packet to a designated routing node according to the home address status information in the routing control policy information;
• and
• send, using the interface, the first data packet to a destination node via a current mobile router of the destination node through a tunnel with the current mobile router of the destination node.