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 :: Mailing Lists

[ILUG] YADQ (Yet Another DNS Question)

[ILUG] YADQ (Yet Another DNS Question)

Niall O Broin niall at linux.ie
Wed Apr 5 14:25:59 IST 2006


It's my day for DNS questions :-)  I have a DNS server in a small  
office which serves up a local domain or two, and caches other  
queries. One of the people in the office is a little miffed that for  
some reason it won't resolve his dynamic address which is  
smurf.homeip.net

dig @192.168.1.53 smurf.homeip.net

returns

; (1 server found)
;; global options:  printcmd
;; connection timed out; no servers could be reached

yet if you do

dig +trace @192.168.1.53 smurf.homeip.net

it returns an IP, albeit with a LONG (20s) delay after getting the  
homeip.net NS addresses.

If you repeate the dig +trace immediately, it completes as fast as  
you'd like it to. But if you do a regular dig just after a dig  
+trace, it again fails, though I'd expect it to be cached.



Niall




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