Miroslav Lichvar 5ed9b888ff ntp: don't accept packets with unexpected authentication ...

If authentication is not enabled in configuration, responses are not
expected to be authenticated. Handle such responses as having failed
authentication.

A case where this could happen is a misconfigured symmetric association
where only one peer has specified the other with a key. Before this
change synchronization would work in one direction and used packets
with an asymmetric length.

2020-03-05 16:02:15 +01:00

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