Hi Jiri,

I have the same issue.

I think it is not a performance degradation but I think that root cause in
skipped messages.

For example, frame 56 in your debian10_sctp_test_to_sctp_test.pcapng shows
that the data message with sctp.data_tsn == 919935042 was received on
server interface but it was acked in frame 78 only.

It happens periodically with high-load traffic. The server can capture DATA
on network interface but SCTP level does not receive it.

Best regards,


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