inline-signing: SOA serial out of sync

[Tony Finch]

Axel Rau <Axel.Rau at Chaos1.DE> wrote:
>
> occasionally named 9.11.3 fails to increment SOA serial like here:
>
> 	file: 2018060605 dns: 2018060604

With inline signing the signed and unsigned zones have separate serial
numbers, so this is normal. If I understand inline-signing correctly, when
you only modify the unsigned zone's serial number, that is not a big
enough change to require an update to the signed version of the zone.

You can use `rndc zonestatus` to see the server's view of both serial
numbers.

You can use `rndc signing -serial` to set the serial number of the signed
zone.

You might want to set `serial-update-method` if you want something more
meaningful than an increment for each update (e.g. `date`).

Tony.
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