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IANA exhausted its IPv4 address space in 2011, and IPv6 is the next generation to replace IPv4. However, the IPv6 transition techniques are still immature and holding back the development of the next-generation Internet. Hence, IPv4-IPv6 coexistence is becoming increasingly imminent. During the coexistence period, the Internet will consist of IPv4-only, IPv6-only, and dual-stack segments. Both the...
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