[dns-operations] DNS version request

Warren Kumari warren at kumari.net
Fri Dec 7 20:46:43 UTC 2018


On Fri, Dec 7, 2018 at 1:42 AM Ray Bellis <ray at isc.org> wrote:

> On 21/11/2018 16:36, Dave Lawrence wrote:
>
> > And in the case of CHAOS class queries like version.bind, they're
> > also handled local to the responding server.  While I won't make the
> > bold claim that there's no DNS server software out there that might
> > forward them to some other server, the ones I know of just handle it
> > in a separate path that never sees forwarding or recursing.
>
> There's plenty of ALGs in home CPE pretending to be a DNS server that
> blindly forward CH queries to the back-end resolver that they're
> configured to talk to.


... and I must admit, with much embarrassment, that that has tripped me up
once or twice. I've been at a hotel which was doing weird DNS stuff, but CH
records were passed through unmolested -- this made troubleshooting
trickier because I assumed the problem was elsewhere...

W



>
> Ray
>
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-- 
I don't think the execution is relevant when it was obviously a bad idea in
the first place.
This is like putting rabid weasels in your pants, and later expressing
regret at having chosen those particular rabid weasels and that pair of
pants.
   ---maf
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