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My home Windows 7 PC is having problems with a DNS lookup. I have several machines in my home network including one called "ROSE". When I execute ping ROSE from a command prompt, the ping is against the external IP address for the server "ROSE.mycompany.com" (a server at the company where I work). If I do ping TULIP (another machine in my local network) the ping is executed (correctly) against the machine in my home network; note that there is no TULIP registered in the "mycompany.com" domain.

My guess is that the name resolution looks in the "mycompany.com" domain first; if no result it then looks locally.

I cannot figure out why the name resolution is looking at "mycompany.com". I do have a company Cisco VPN client installed, but not currently installed. Here is the output from ipconfig: 

Windows IP Configuration

   Host Name . . . . . . . . . . . . : DAISY
   Primary Dns Suffix  . . . . . . . : mycompany.com
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : mycompany.com
                                       gateway.2wire.net

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . : gateway.2wire.net
   Link-local IPv6 Address . . . . . : fe5b::68f5:f8aa:964d:579d%10
   IPv4 Address. . . . . . . . . . . : 192.168.1.104
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.1.254

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Connection-specific DNS Suffix  . :
   IPv6 Address. . . . . . . . . . . : 2001:0:9d38:935c:104b:345:9f54:a9e3
   Link-local IPv6 Address . . . . . : fe80::104b:345:943f:fbe3%12
   Default Gateway . . . . . . . . . : ::

Tunnel adapter isatap.{255B0CD9-D11F-98E3-B536-4D7EFC23F3FF}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Tunnel adapter isatap.gateway.2wire.net:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : gateway.2wire.net

What else should I be looking for?

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  • 1
    It might be helpful to run ipconfig /all and include the DNS servers.
    – ta.speot.is
    Mar 29, 2013 at 2:56
  • Added ipconfig /all information.
    – rlandster
    Mar 29, 2013 at 3:21

1 Answer 1

Reset to default
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Click on Start, Control Panel, Network and Sharing Center, Local Area Connection, and in the window that pops up, click on properties. Then click on Internet Protocol Version 4 (IPv4). Click on the Properties button, then click on Advanced. In the window that opens, click on the DNS Tab. If the DNS suffix box is filled, clear it.

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  • The box labeled "DNS suffix for this connection" was already empty. Is that the box you meant?
    – rlandster
    Mar 29, 2013 at 3:28
  • Yes. Are there any specified in "Append these DNS Suffixes"?
    – Davidw
    Mar 29, 2013 at 3:59
  • No, nothing in "Append these DNS Suffixes".
    – rlandster
    Mar 29, 2013 at 4:30
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    What is the computers full name in Control Panel, System?
    – Davidw
    Mar 29, 2013 at 5:08
  • The computers full name is "DAISY.mycompany.com". Ah. That fixed it. The setting was under that System properties "Primary DNS suffix of this computer".
    – rlandster
    Mar 29, 2013 at 6:01

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