Method and device for stateful conversion between IPv4 address and IPv6 address
An IP address and state transition technology, applied in the network field, can solve problems such as inefficient search methods and equipment performance bottlenecks, and achieve the effect of saving storage space and ensuring high efficiency
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[0055] In this embodiment, the stateful conversion between the IPv4 address and the IPv6 address is realized based on the packet connection tracking mechanism.
[0056] Connection tracking (conntrack) is a common connection management method at the network layer. The so-called connection tracking is to track and record the connection status. For an IP packet that receives a connection, the connection tracking mechanism first needs to search for the connection record (Connection entry). When searching, it will enter the connection tracking table according to the five-tuple in the network layer and transport layer header information of the IP packet. Do a lookup for that quintuple. If not found, generate a connection record (Connection entry) for the connection. Thereafter, all IP packets belonging to this connection are uniquely assigned to this connection. In a connection record, information such as the quintuple of the two directions of the IP message, the record survival ...
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