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IPv4已经使用25年了，它已经过了最有效的时期，已不能跟上Internet的发展。IPv6是IPv4的自然演进，它克服了旧协议的许多缺点，并且能适应Internet的发展。IETF的IPng工作组已经制定了关于IPv6的标准，NGtrans工作组则正在研究如何从IPv4平滑地过渡到IPv6。IPv6的优点从90年代
IPv4 has been used for 25 years, it has passed the most effective period, has been unable to keep up with the development of the Internet. IPv6 is the natural evolution of IPv4, it overcomes many of the shortcomings of the old agreement, and can adapt to the development of the Internet. The IETF IPng Working Group has set the standard for IPv6, and the NGtrans Working Group is studying how to make a smooth transition from IPv4 to IPv6. The advantages of IPv6 from the 90’s