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In Windows, with IPv4 stack disabled, can I encapsulate IPv4 addresses over the IPv6 stack to reach an IPv4 host ?

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up vote 4 down vote accepted

If you disable the IPv4 operating system stack, it won't be able to access anything that uses IPv4.

You may use a IPv4-in-IPv6 tunnel (4in6) to access the IPv4 Internet over a IPv6-only connection, but your operating system still needs the full IPv4 stack operating locally. There were NAT-PT and NAPT-PT, that allowed a IPv6-only host to access the IPv4 Internet without using an IPv4 protocol stack, but a lot of problems were found with this approach and these protocols were made obsolete in RFC 4966.

The best transition from IPv4 to IPv6 is to use a dual stack during some time, gradually phasing out IPv4 in favor to IPv6.

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