In Windows Vista, the TCP/IPv4 default gateway address is deleted when you use the Netsh command-line tool to configure the network interface IP address for the Dynamic Host Configuration Protocol (DHCP).

For example, you type the following command at a command prompt:

netsh interface ipv4 set address name=”Local Area Connection” source=dhcp

If you check the default gateway address by using the ipconfig command, you see that the IPv4 default gateway address is deleted.

Note: This problem occurs if the network interface has already configured by using DHCP.

You successfully establish a dial-up connection in Windows Vista to another computer or to the Internet. However, the IP address of the default gateway for the connection is 0.0.0.0. For example, when you run the ipconfig command at the command prompt, the default gateway appears as 0.0.0.0.

You do not experience this behavior in Microsoft Windows XP or in other earlier versions of the Windows operating system.

When you wake a Windows Vista-based computer from sleep, the default gateway setting is lost. When you run the ipconfig /all command to view the IP configuration, you cannot see the default gateway setting.

This problem occurs if the following conditions are true:

• The computer is configured as a Dynamic Host Configuration Protocol (DHCP) client, and the computer is connected to a DHCP server.
• The DHCP server configures a scope together with options 3 and 249.
• The computer is included in this scope.