Meaning of "info: generate keytag query..."

[Anand Buddhdev]

On 19/03/2018 18:49, Matthias Fischer via Unbound-users wrote:

Hi Matthias,

> I run 'unbound 1.7.0' on an IPFire 2.19 / Core 119 firewall router for a
> few days. Today I found some messages I never saw before:
> 
> ...
> 02:47:12 unbound: [22034:0] info: generate keytag query _ta-4a5c-4f66. NULL IN
> 14:46:54 unbound: [22034:0] info: generate keytag query _ta-4a5c-4f66. NULL IN
> 18:38:41 unbound: [22034:0] info: generate keytag query _ta-4a5c-4f66. NULL IN
> 
> I'd like to know what this means - any hints?

Unbound 1.7.0 is doing trust anchor signaling to the root name servers,
according to RFC 8145. See this URL for more details:

https://tools.ietf.org/html/rfc8145

Regards,
Anand Buddhdev
RIPE NCC