[dns-operations] The (very) uneven distribution of DNS root servers on the Internet

[Wessels, Duane]

On May 16, 2012, at 5:07 PM, Paul Hoffman wrote:

> This fills their cache, well within the TTL of any of the TLDs.
> 
> Doesn't that solve the problem?

There is a fair amount of NXDOMAIN to the roots, of course.

But also, some implementations (particularly BIND) won't use the cache
when name server A/AAAA records expire.  When those records expire the
iteration starts at the root again.  A way to prevent cache poisoning I
believe.

DW