Tokio-rustls (TLS) - BadRecordMac

Hello!

My Server works correctly usually but sometimes:
Log:

2024-02-01T18:45:15.977204Z  WARN rustls::conn: Sending fatal alert BadRecordMac    
2024-02-01T18:45:15.978603Z ERROR auth: error = Custom { kind: InvalidData, error: DecryptError }, peer: 10.20.90.16:38996

Any ideas?

Which machine has that IP address? It should be something on your local network, since it's in the 10.0.0.0/8 range. Is it normal for that address to be connecting to your server?