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

Karl Auer kauer at biplane.com.au
Wed Apr 1 09:29:56 UTC 2020


On Wed, 2020-04-01 at 09:19 +0100, Chris Green wrote:
> The Raspberry Pi on the LAN runs dnsmasq which provides DHCP and DNS
> so when a system asks for the address of esprimo.zbmc.eu the
> Raspberry Pi answers.

Unless you are running that domain ON the Pi, the Pi will have to
forward the query outside your network to get any answers about it.

Once obtained, the answers will remain valid for a period of time (the
TTL) before the Pi asks again. 

That particular name doesn't seem to resolve on the normal DNS, and
five seconds seems a long delay for an authoritative response (and too
short for a failover).

Post the output of "dig esprimo.zbmc.eu"...

Regards, K.

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