have DNS show two IP's for one server
mciccone at etoys.com
Thu Oct 26 14:00:55 UTC 2006
So, does it depend on what server you are using? For example if I use
Qwest's 18.104.22.168. I do get two IP's... But if I use Qwest's
22.214.171.124 I only get one see below:
Does this mean I have everything setup correctly?
Thanks for the help....
Default Server: resolver2.qwest.net
Addresses: 126.96.36.199, 188.8.131.52
> server 184.108.40.206
Default Server: resolver1.qwest.net
eToys Direct, Inc.
Mark Andrews <Mark_Andrews at isc.org>
Sent by: Mark_Andrews at isc.org
10/25/2006 05:10 PM
Sten Carlsen <ccc2716 at vip.cybercity.dk>
Mike Ciccone <mciccone at etoys.com>, comp-protocols-dns-bind at isc.org
Re: have DNS show two IP's for one server
> I see two addresses:
> $dig www.mytwinn.com any
> ; <<>> DiG 9.3.2 <<>> www.mytwinn.com any
> ;; global options: printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12091
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 0
> ;; QUESTION SECTION:
> ;www.mytwinn.com. IN ANY
> ;; ANSWER SECTION:
> www.mytwinn.com. 900 IN A 220.127.116.11
> www.mytwinn.com. 900 IN A 18.104.22.168
> ;; AUTHORITY SECTION:
> mytwinn.com. 900 IN NS cons1.kbkids.com.
> mytwinn.com. 900 IN NS cons2.kbkids.com.
> ;; Query time: 222 msec
> ;; SERVER: 192.168.14.254#53(192.168.14.254)
> ;; WHEN: Thu Oct 26 00:45:20 2006
> ;; MSG SIZE rcvd: 112
But if you ask for A records you get 1 record w/ a 60
It looks like there is a load balancer there which
A queries through to the BIND backend.
> Mike Ciccone wrote:
> > Content-Type: text/plain; charset="US-ASCII"
> > I'm sorry the abc123.com... wasn't the actual server. The actual
> > is www.mytwinn.com
> > Internally I get the following:
> > nslookup www.mytwinn.com
> > Server: 127.0.0.1
> > Address: 127.0.0.1#53
> > Name: www.mytwinn.com
> > Address: 22.214.171.124
> > Name: www.mytwinn.com
> > Address: 126.96.36.199
> > If I run the nslookup from an outside source I only get one address
> > (either one but only one)
> > For example:
> > Stephane Bortzmeyer <bortzmeyer at nic.fr>
> > 10/25/2006 02:32 PM
> > To
> > cagspy <mciccone at etoys.com>
> > cc
> > comp-protocols-dns-bind at isc.org
> > Subject
> > Re: have DNS show two IP's for one server
> > On Wed, Oct 25, 2006 at 12:43:19PM -0700,
> > cagspy <mciccone at etoys.com> wrote
> > a message of 12 lines which said:
> >> When I run nslookup or dig from my dns server for my server
> >> abc123.com. I get both external IP's for that server. When I go
> >> out to the internet and do a lookup. I only get one IP
> > I indeed see one IP address:
> > % dig A abc123.com.
> > ; <<>> DiG 9.2.4 <<>> A abc123.com.
> > ;; global options: printcmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18465
> > ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
> > ;; QUESTION SECTION:
> > ;abc123.com. IN A
> > ;; ANSWER SECTION:
> > abc123.com. 86375 IN A 188.8.131.52
> > ;; AUTHORITY SECTION:
> > abc123.com. 86375 IN NS ns5.ixwebhosting.com.
> > abc123.com. 86375 IN NS ns6.ixwebhosting.com.
> > ;; ADDITIONAL SECTION:
> > ns5.ixwebhosting.com. 172667 IN A 184.108.40.206
> > ns6.ixwebhosting.com. 172667 IN A 220.127.116.11
> > ;; Query time: 1 msec
> > ;; SERVER: 127.0.0.1#53(127.0.0.1)
> > ;; WHEN: Wed Oct 25 22:32:00 2006
> > ;; MSG SIZE rcvd: 125
> >> (it does alternate).
> > Can you post the actual results you got, both internally and on the
> > remote machine? Because your description does not seem to be complete.
> Best regards
> Sten Carlsen
> No improvements come from shouting:
> "MALE BOVINE MANURE!!!"
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
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