Tips for adding IPv6 to IPv4 networks
The original title for this story was "Transitioning from IPv4 to IPv6," but when we started researching, we quickly realized that most organizations are adopting an outside-in strategy, rather than moving over from all-IPv4 to all-IPv6 deployments. This means that they're often taking steps to accommodate incoming and outgoing IPv6 traffic at the organizational boundary and translating between the two stacks, or tunneling one protocol over another, for internal access and use. The majority of internal clients and other nodes are using IPv4, with increasing use of IPv6 in dual-stack environments (environments that run IPv4 and IPv6 protocol stacks side-by-side).
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(Insider Story)