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Name resolution problem

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  #1 (permalink)  
Old 02-23-2007
Jonny Bergdahl
 

Posts: n/a
Name resolution problem
I have just installed Windows Vista Ultimate (clean install), and is having
a strange name resolution problem, as shown in the following command
sequence:

1. ping amachine.adomain.com
Returns "host unknown"

2. ping <ip asdress>
Works.

3. nslookup amachine.adomain.com
Returns the correct IP address

4. ipconfig /flushdns
Returns ok.

5. ping amachine.adomain.com
STILL returns "host unknown"

Name resolution works on all the other machines in the LAN (running Windows
2000, XP and 2003).

What is going on? Please advice! Any help is appreciated!

Regards;
/jb






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  #2 (permalink)  
Old 02-23-2007
Robert L [MVP - Networking]
 

Posts: n/a
Re: Name resolution problem
If you do "nslookup" only, do you receive any error? Also check the DNS suffix.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Jonny Bergdahl" <jonny.bergdahl@community.nospam> wrote in message news:8A37C24D-CA17-4C4C-9596-5DB19F5FB92E@microsoft.com...
I have just installed Windows Vista Ultimate (clean install), and is having
a strange name resolution problem, as shown in the following command
sequence:

1. ping amachine.adomain.com
Returns "host unknown"

2. ping <ip asdress>
Works.

3. nslookup amachine.adomain.com
Returns the correct IP address

4. ipconfig /flushdns
Returns ok.

5. ping amachine.adomain.com
STILL returns "host unknown"

Name resolution works on all the other machines in the LAN (running Windows
2000, XP and 2003).

What is going on? Please advice! Any help is appreciated!

Regards;
/jb






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  #3 (permalink)  
Old 02-24-2007
Jonny Bergdahl
 

Posts: n/a
Re: Name resolution problem
NSLOOKUP works fine:

C:\Users\jonny.<censured>>nslookup
Standardserver: <censured>
Address: <censured>:53

The domain I am trying to reach is not the same that my machine belongs to.
It is a customer domain, and my local LAN DNS is setup to connect to the
customer's DNS to get the IP addresses for that domain. I don't have a
problem with that, all machines in the net can properly resolve the
addresses belonging to that domain, including the Vista machine (using
NSLOOKUP).

The problem seems to be that explorer (and PING) don't seem to use the name
resolution handling as NSLOOKUP uses?

I CAN get the IP address using NSLOOKUP on the address. I CAN'T get the IP
address doing a PING on the same address. In my experience this is
impossible (it is certainly impossible under UNIX), so something must have
been changed in the name resolution functions in Vista.

Regards;
/jb
"Robert L [MVP - Networking]" <noreply@hotmail.com> skrev i meddelandet
news:OPySWX3VHHA.1036@TK2MSFTNGP03.phx.gbl...
If you do "nslookup" only, do you receive any error? Also check the DNS
suffix.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
"Jonny Bergdahl" <jonny.bergdahl@community.nospam> wrote in message
news:8A37C24D-CA17-4C4C-9596-5DB19F5FB92E@microsoft.com...
I have just installed Windows Vista Ultimate (clean install), and is having
a strange name resolution problem, as shown in the following command
sequence:

1. ping amachine.adomain.com
Returns "host unknown"

2. ping <ip asdress>
Works.

3. nslookup amachine.adomain.com
Returns the correct IP address

4. ipconfig /flushdns
Returns ok.

5. ping amachine.adomain.com
STILL returns "host unknown"

Name resolution works on all the other machines in the LAN (running Windows
2000, XP and 2003).

What is going on? Please advice! Any help is appreciated!

Regards;
/jb

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