Re: Strange behavior from resolvers?

[Alex Kamantauskas]

>>> I have a guess, but I haven't tested it yet.  Something between the
>>> internet and those two servers ns1/2.obol-net.net is refusing packets
>>> with UDP source port 53.
>>
>>  If that were the case, than all queries would fail, but an SOA query
>>  still works:
>>
>>   root/ns1:/ # dig obol-net.net soa
>>   ;; ANSWER SECTION:
>>   obol-net.net.           1D IN SOA       ns1.obol-net.net.
>
> No, no.  *source* address.  Of packets coming from the *outside*.
> It would be a goofy thing to do, but it fits the observations.
>

 Source packets generally wouldn't be coming from port 53, iirc.  The
 destination would be port 53, but the source would be a higher
 unpriveleged port.

-- 
/ak