How do I make my local windows 7 environment use ipv4?

I have an ASPX MVC v3 applications that is using

String sourceIp = Request.ServerVariables["REMOTE_ADDR"];

to get the IP Address. The problem is that this is returning me the IPv6 version. I need the IPv4 version.

My understanding is that there is nothing the website can do to get the IPv4 version, what I need to do is tell the server (my computer, this is local development) to use IPv4 instead of IPv6.

We have turned off IPv6 in the Local Area Connection Status -> Properties but its still grabbing the IPv6 version.

How can I get the IPv4 address?

Note: I need the IPv4 because we are using a third party service that requires the ip as one of the parameters in IPv4 format.

ANSWER

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Worked out an easy work around. When I press debug it opens up IE with http://localhost:8023/mysite, if change the localhost to 127.0.0.1 then it will use 127.0.0.1 as the ip address, which is IPv4 format.

I recommend checking the HTTP_X_FORWARDED_FOR value first as discussed in Phil Haack's post "A Gotcha Identifying the User's IP Address"

HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]

Here is a great code sample showing exactly how to do it

Worked out an easy work around. When I press debug it opens up IE with http://localhost:8023/mysite, if change the localhost to 127.0.0.1 then it will use 127.0.0.1 as the ip address, which is IPv4 format.