RAS tries to dial out even on local resources.

Start the registry editor (regedit.exe)

Move to HKEY_CURRENT_USERSoftwareMicrosoftRAS AutodialAddresses (a better way to view these is to type "rasautou -s" from the command prompt)

In the subkeys look from the local address (and name). If you find it select the key and select Delete from the Edit menu.

Close the registry editor

Start the registry editor (regedt32.exe not regedit.exe)

Move to HKEY_CURRENT_USERSoftwareMicrosoftRAS AutodialControl

Double click on DisabledAddresses and add the address on a new line. Click OK when finished

Close the registry editor