Hi,
I have a very specific issue with resolving auppa01.sydney.bhdc.mebs.ihost.com Name to IP using DNS Servers @ wehid.wehi.edu.au.
However, If I use dig with forced TCP, it resolves fine. Also, from many other DNSs, I could resolve without any issues with UDP and TCP both.
Any hints why this specific DNS cant resolve using UDP for above name to IP using the DNS given?. Dig outputs are given below;
Working DIG:
# dig @129.33.32.102 auppa01.sydney.bhdc.mebs.ihost.com +tcp
; <<>> DiG 9.2.4 <<>> @129.33.32.102 auppa01.sydney.bhdc.mebs.ihost.com +tcp
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16048
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2
;; QUESTION SECTION:
;auppa01.sydney.bhdc.mebs.ihost.com. IN A
;; AUTHORITY SECTION:
bhdc.mebs.ihost.com. 3600 IN NS
aubhqdn02ict5x2.noc04.mebs.ihost.com.
bhdc.mebs.ihost.com. 3600 IN NS
aubhqdn01ict5x2.noc04.mebs.ihost.com.
;; ADDITIONAL SECTION:
aubhqdn01ict5x2.noc04.mebs.ihost.com. 3600 IN A 203.184.65.132
aubhqdn02ict5x2.noc04.mebs.ihost.com. 3600 IN A 203.184.65.133
;; Query time: 252 msec
;; SERVER: 129.33.32.102#53(129.33.32.102)
;; WHEN: Fri Jan 11 11:19:34 2008
;; MSG SIZE rcvd: 150
NON Working DIG:
dig +trace auppa01.sydney.bhdc.mebs.ihost.com
; <<>> DiG 9.2.4 <<>> +trace auppa01.sydney.bhdc.mebs.ihost.com
;; global options: printcmd
. 3600000 IN NS E.ROOT-SERVERS.NET.
. 3600000 IN NS F.ROOT-SERVERS.NET.
. 3600000 IN NS G.ROOT-SERVERS.NET.
. 3600000 IN NS H.ROOT-SERVERS.NET.
. 3600000 IN NS I.ROOT-SERVERS.NET.
. 3600000 IN NS J.ROOT-SERVERS.NET.
. 3600000 IN NS K.ROOT-SERVERS.NET.
. 3600000 IN NS L.ROOT-SERVERS.NET.
. 3600000 IN NS M.ROOT-SERVERS.NET.
. 3600000 IN NS A.ROOT-SERVERS.NET.
. 3600000 IN NS B.ROOT-SERVERS.NET.
. 3600000 IN NS C.ROOT-SERVERS.NET.
. 3600000 IN NS D.ROOT-SERVERS.NET.
;; Received 420 bytes from 128.250.252.74#53(128.250.252.74) in 1 ms
com. 172800 IN NS G.GTLD-SERVERS.NET.
com. 172800 IN NS F.GTLD-SERVERS.NET.
com. 172800 IN NS D.GTLD-SERVERS.NET.
com. 172800 IN NS I.GTLD-SERVERS.NET.
com. 172800 IN NS C.GTLD-SERVERS.NET.
com. 172800 IN NS L.GTLD-SERVERS.NET.
com. 172800 IN NS A.GTLD-SERVERS.NET.
com. 172800 IN NS J.GTLD-SERVERS.NET.
com. 172800 IN NS K.GTLD-SERVERS.NET.
com. 172800 IN NS E.GTLD-SERVERS.NET.
com. 172800 IN NS H.GTLD-SERVERS.NET.
com. 172800 IN NS M.GTLD-SERVERS.NET.
com. 172800 IN NS B.GTLD-SERVERS.NET.
;; Received 508 bytes from 192.203.230.10#53(E.ROOT-SERVERS.NET) in 170 ms
ihost.com. 172800 IN NS ns.almaden.ibm.com.
ihost.com. 172800 IN NS ns.austin.ibm.com.
ihost.com. 172800 IN NS ns.watson.ibm.com.
;; Received 177 bytes from 192.42.93.30#53(G.GTLD-SERVERS.NET) in 171 ms
mebs.ihost.com. 86400 IN NS rtpussdnsb02.mebs.ihost.com.
mebs.ihost.com. 86400 IN NS rtpussdnsb01.mebs.ihost.com.
;; Received 138 bytes from 198.4.83.35#53(ns.almaden.ibm.com) in 200 ms
dig: couldn't get address for 'rtpussdnsb02.mebs.ihost.com': failure
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