[dns-operations] validating zones before distribution to secondaries

[Viktor Dukhovni]

> 
> On May 4, 2021, at 12:28 PM, A. Schulze <sca at andreasschulze.de> wrote:
> 
>> https://github.com/fanf2/nsnotifyd
> 
> Yes, Tony's program it's a little bit tricky to build but works...

For a useful standalone component, I rather like:

	ldns-verify-zone

-- 
	Viktor.