DNS delay on first lookup, Ubuntu 19.10 but not earlier versions

[Karl Auer]

On Wed, 2020-04-01 at 10:41 +0100, Chris Green wrote:
> zbmc.eu is the local domain.  All systems on the LAN register (using
> DHCP) with the Pi so it knows about all the systems on the LAN.  The
> bug only affects my two systems running xubuntu 19.10, all other
> systems (Debian, xubuntu 18.04, MS Windows) work with no delay.

zbmc.eu is also a real domain in the global DNS.

What are you doing that causes the lookups? A browser, dig, something
else?

It is possible that your newer systems are using DOH (DHCP over HTTP);
another possibility is that they are using IPv6 a little differently.

>From one old and one new system please post the output of "dig
esprimo.zbmc.eu"...

Regards, K.

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