A TSIG noncompliance with RFC 2845
- program：knot-dns
- issue type: bug report
- description When kont-dns server receives a qury with TSIG, which tsig_time is b'\x00'*6, knot-dns server return a response with RCODE 1(FORMATERR). This is a noncompliance with RFC2845, as it says:
If the server time is outside the time interval specified by the request (which is: Time Signed, plus/minus Fudge), the server MUST generate an error response with RCODE 9 (NOTAUTH) and TSIG ERROR 18 (BADTIME).
- environment operating system : ubuntu 18.04 software version: knot-dns3.1
- expected response a response with RCODE 9 (NOTAUTH) and TSIG ERROR 18
- actual response a response with RCODE 1