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- Deployment of the Internet Protocol Version 6 (IPv6), the latest generation of the Internet Protocol, has been in progress since the mid-2000s. IPv6 was designed as a replacement for IPv4. IPv4 has been in use since 1982, and is in the final stages of exhausting its unallocated address space, but still carries most Internet traffic. As of April 2022 Google's statistics show IPv6 availability of its users at around 34–38% depending on the day of the week (greater on weekends). Adoption is uneven across countries and Internet service providers. Many countries have 0% use while a few have over 50% use, such as India and Germany. In November 2016, 1,491 (98.2%) of the 1,519 top-level domains (TLDs) in the Internet supported IPv6 to access their domain name servers, and 1,485 (97.8%) zones contained IPv6 glue records, and approximately 9.0 million domains (4.6%) had IPv6 address records in their zones. Of all networks in the global BGP routing table, 29.2% had IPv6 protocol support. By 2011, all major operating systems in use on personal computers and server systems had production-quality IPv6 implementations. Cellular telephone systems present a large deployment field for Internet Protocol devices as mobile telephone service continues to make the transition from 3G to 4G technologies, in which voice is provisioned as a voice over IP (VoIP) service. In 2009, the US cellular operator Verizon released technical specifications for devices to operate on its 4G networks. The specification mandates IPv6 operation according to the 3GPP Release 8 Specifications (March 2009), and deprecates IPv4 as an optional capability. (en)
- 自2000年代中期以来，网际协议第6版（IPv6）（下一代互联网协议）的部署一直在进行中。 IPv6是为了替代自1982年以来一直在使用的IPv4而设计的，并正处于耗尽未分配地址的最后阶段，但仍然传输着大多数的互联网流量。 谷歌的统计数据显示，约有23％的用户使用IPv6上网（2018年6月17日） 。它的使用多集中在周末，且各国和各互联网服务提供商的采用情况也不均衡。 截至2016年11月，互联网上1519个顶级域名(TLDs)中的1491个（98.2%）支持使用IPv6协议访问他们的域名服务器，而其中的1485个（97.8%）域含有IPv6胶水记录（glue record），并有大约九百万个域（4.6%） 拥有IPv6地址记录。在全球BGP路由表中的所有网络中，有29.2％支持IPv6协议。 截至2011年，在个人电脑和服务器系统中使用的主要操作系统都部署了产品级IPv6。由于在移动通信4G技术中使用互联网协议进行语音通话（VoIP），蜂窝电话系统成为了互联网协议设备大量部署的领域，这种网络中就需要使用IPv6。在2009年，美国蜂窝运营商Verizon公布了设备在其“下一代”网络上运行的技术规范。 该规范要求根据3GPP规范版本8（2009年3月）使用IPv6，并将IPv4弃用为可选功能。 主要的互联网服务提供商，包括互联网服务供应商（ISP）和内容提供商，都将IPv6传输应用到其产品中。 (zh)
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