WCF and interfaces on data contracts

While creating the WCF proxy using svcutil, is it possible to include the interfaces as well from which the data contracts inherit, e.g.:

public class SomeType: ISometype
{
   public string Name { get; set; }
}

public interface ISometype
{
   public string Name { get; set; }
}

When I create the proxy using this, the SomeType type is created at the client but the interface isn't created and there is no inheritance either. I tried marking the interface as DataContract but that attribute isnt allowed.

Is it possible to do what I am trying to do?