Windows 7: DNS problems after connected to public network

chev65 · 02 Dec 2010

Pretty much all networking problems with your machine can be fixed by running the batch file below other than defining different subnets.

From what I'm seeing here the router or it's settings are part of the problem, in that the subnet is different than the one at the school. When connecting to different subnets with the same adaptor you usually need to define or list the two different subnets and default gateways in the advanced TCP/ip properties window.

The picture below should make it clear where you need to enter the two different subnets but you will need the subnet and default gateway from the school first.

The batch file will be easier than running system restore and may be worth a try.

This will will reset winsock, reset the TCP/IP stack and release renew your IP.

Download Renew IP + Reset Winsock Batch File

janw · 02 Dec 2010

Sorry, that doesnt work:

C:\Users\user>ping ds410j
Ping request could not find host ds410j. Please check the name and try again.

chev65 · 02 Dec 2010

All I can suggest is that you obtain the default gateway and subnet of the other network then define the two different different subnets and default gateways in the advanced TCP/ip window, use the "add" button.

Doing that should allow you to switch between the two different networks without any problems.

janw · 04 Dec 2010

@chev65: Allright, Im gonna try that out then.

I just did a system recovery and as expacted now it works again. So heres my ipconfig /all output from when I can ping my local hosts by hostname:

Code:

Windows IP Configuration

   Host Name . . . . . . . . . . . . : sl510
   Primary Dns Suffix  . . . . . . . : 
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Wireless Network Connection:

   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Intel(R) WiFi Link 1000 BGN
   Physical Address. . . . . . . . . : 00-26-C7-60-D6-3E
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::1c43:a971:5e7f:113a%13(Preferred) 
   IPv4 Address. . . . . . . . . . . : 192.168.0.3(Preferred) 
   Subnet Mask . . . . . . . . . . . : 255.255.255.192
   Lease Obtained. . . . . . . . . . : Samstag, 4. Dezember 2010 10:00:00
   Lease Expires . . . . . . . . . . : Sonntag, 5. Dezember 2010 10:00:00
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DHCPv6 IAID . . . . . . . . . . . : 318777031
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-81-D8-85-60-EB-69-38-AD-35
   DNS Servers . . . . . . . . . . . : 192.168.0.1
                                       213.191.74.11
                                       213.191.92.82
   NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : 60-EB-69-38-AD-35
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes


Tunnel adapter isatap.{18DAD967-A1E6-4538-81BB-AEBE6522FCBD}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 11:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Microsoft Teredo Tunneling Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{E7B82ABE-DC9D-4C11-A0BD-7ECAB27EA4DD}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{78BEBDF9-6BA3-469C-8CC8-D141518DE791}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{EC5DDBF7-5517-4CBB-9C48-7E54695A5D1A}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #4
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Windows 7: DNS problems after connected to public network

DNS problems after connected to public network problems?