Хм, нашел вот
Technologically it sounds feasible, but in fact, it is not currently. Many persons will tell you to use software, hardward, combination, but I have not found anything solidly provened to work. I am not sure windows XP or even Vista is designed to handle this. I am sure the next generation will though because of persons like you thinking outside the box... like w/IPv6. Windows will not understand two IP addresses assigned to itself. Nor be competant enough to split the data. It may however be done by a 3rd party vendor/software, etc.
короче, технически возможно, но не сейчас. Виндовс не понимает сразу два IP адреса, и не может разделить данные. Возможно, какой-то сторонний разработчик такое и сделает, но....
По ходу да, борода :-(