RNDC: connection to remote host closed error

[luke-powers]

I have a number of dns servers up using docker-bind but the last two that I've set up (after the latest build back in May 2020) I continually run into the following issue after setting up rndc for a fresh container with a new zone:

/root@dns:/# rndc flush
WARNING: key file (/etc/bind/rndc.key) exists, but using default configuration file (/etc/bind/rndc.conf)
rndc: connection to remote host closed
This may indicate that
* the remote server is using an older version of the command protocol,
* this host is not authorized to connect,
* the clocks are not synchronized,
* the key signing algorithm is incorrect, or
* the key is invalid.

This isn't a significant issue as bind can just be restarted, but wondering if there's a quick fix for it (other than reverting to an older container release).

Thanks!

[mohammedmathin]

Rebooting the server will solve this issue.