Leen Besselink wrote:
> If you take tcpdump, you'll see it does this at startup and those
> 'random'-hostnames will remain to be queried (probably to check if a
> dns resolver is still responding ?):

it's to detect NXDOMAIN rewriting.

https://isc.sans.edu/diary.html?storyid=10312

-- 
Robert Edmonds
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