Source port allocation is assigned by the transport layer, My concurrency is very high, so port duplication is normal.
Nginx actively closed the connection. The process is as follows: nginx: fin, seq=100, ack=200 vpp: fin ack:seq=200 ack=101 nginx: seq=101 ack= 201 after 10 seconds: vpp: syn: seq =10 ack = 0 nginx: syn=101 ack=201 2msl time equals 1s has been set. So what you mean is that the 2msl time has not taken effect, and in the same 5-tuple, the sequence number of the next syn request generated within time_wait time needs to be greater than the previous one ? But in same 5-tuple, some packages have smaller syn than the previous stream, and nginx still responds normally . Regards, Rain
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