A network monitoring tool may reveal that maybe 5% or 10% of network traffic is IPv6 traffic, but it may not be able to identify which specific packets are IPv6, and some tools may not have been upgraded to support IPv6.
"It's still a work in progress to gain consistent visibility of mixed environments," says Frey.
Variables such as those described by Frey illustrate the need for a well-thought-out and well-executed rollout plan, says ISOC's Daigle.
"Any enterprise network operator knows that something done quickly is something done expensively," she says.
The third segment of this series--which first looked at how different networks have different IPv6 needs--will examine how to manage compliance and security in an IPv6 project.
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