Spikes on recursive resolution average time in Unbound

[sthaug at nethelp.no]

>> I live in Brazil so I know that the root DNS servers should be
>> far from here.
> 
> Really?  I beleive there exists RIPE Atlas measurements which
> indicate that there are serveral root DNS name server instances
> present in Brazil.

The zoomable map at https://root-servers.org/ indicates that there
are 31 instances of root DNS servers in Brazil, with 5 instances
in Rio de Janeiro alone.

Steinar Haug, AS2116