UserWarning: Verification of GCM tag failed: MAC check failed

[jurgonaut]

I am seeing this warning:

/usr/local/lib/python3.7/dist-packages/scapy/layers/ssl_tls_crypto.py:1095: UserWarning: Verification of GCM tag failed: MAC check failed
  warnings.warn("Verification of GCM tag failed: %s" % why)

Firs I do a "do_handshake" on a TLSSoket, the handshake is successful and after that I do do_round_trip(TLSPlaintext(data=)). After the round trip the warning is printed. The program works fine I just want to know if the warning can be ignored or otherwise how to fix it.

Thanks in advance and for the great work you are doing with this module.

[krizhanovsky]

We encountered the problem (tempesta-tech/tempesta#1310) as well and fixed it with tempesta-tech/tempesta-test@51f2680 . I didn't open a pull request for this original repo since it's unsupported any more, but I hope the fix will be useful for other people facing the problem.