The IP address of the default gateway for a dial-up connection in Windows Vista is 0.0.0.0
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.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB935269.

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Comments
wterry
Jul 10, 2007 at 12:53 pm
Microsoft says this doesn’t cause any problems with the connection but they are wrong. VPN’s such as the Citrix SSL vpn require a default gateway in order to establish a connection. In Vista the default gateway is technically “0.0.0.0″ and so the VPN refuses to establish. I have found no work around as of yet…..
Joe
Jul 10, 2007 at 1:36 pm
Yea, I see Microsoft says this is by design, so you can’t expect a hotfix to come along. If you do find a way around this, let us know!
Wesley Terry
Jul 12, 2007 at 7:38 pm
Solved…. or well at least a great work around.
If you look at a dial-up connection properties, you’ll see a client IP and a “server IP”.
If you do a “route print” you’ll see several routes with a default gateway of “on-link” and then there is one route with the server address as the default gateway.
If you type “route change 0.0.0.0 mask 0.0.0.0 123.123.123.123″
where 123.123.123.123 is the “server ip”
You can do an Ipconfig and you’ll see your default gateway will now be that address.
My vpn instantly establishes and there are no routing problems.
The only catch is this has to be done everytime you connect….. now I just need to figure out how batch files work in vista…
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