This "sudo journalctl" (Linux system log) log line:
123456 being my qbt listening port. And indeed when i keep qBittorrent 4.4.2 stopped, network connection is OK.kernel: TCP: request_sock_TCP: Possible SYN flooding on port 123456. Sending cookies. Check SNMP counters.
I was searching this log message and someone here is talking about libtorrent-rasterbar settings change. But my qbt was rather long time not updated and my libtorrent neither (since beginning of the month 26 days at least). So out of sudden this. What should i check please?