Error: zone example.com/IN (signed): receive_secure_serial: unchanged

[Tom]

Hi list

Any hints on the error below after restarting bind (using BIND-9.12.3-P1)?

zone example.com/IN (signed): receive_secure_serial: unchanged

DNSSEC is working fine on the zone "example.com", but as I mentioned: 
The severity is "error" and it's not clear why.

Many thanks for any hints/ideas.

Kind regards,
Tom


On 11.03.19 09:14, Tom wrote:
> Hi list
> 
> We're sometimes receiving the same error as described in 
> https://gitlab.isc.org/isc-projects/bind9/issues/256 after reloading BIND.
> 
> zone example.com/IN (signed): receive_secure_serial: unchanged
> 
> What does this error exactly means? What can I do to prevent this error?
> 
> It seems, that DNSSEC is working fine, but the error is confusing.
> 
> Thank you.
> 
> Kind regards,
> Tom