清空隧道配置:

netsh interface ipv6 set teredo disable
netsh interface ipv6 6to4 set state disable
netsh interface ipv6 isatap set state disable

Teredo:

可以穿越NAT通过将IPv6数据包封装在UDP中访问IPv6网络
公共Teredo服务器地址列表：

• teredo.remlab.net / teredo-debian.remlab.net (法国) (Miredo 默认设置)
• teredo.autotrans.consulintel.com (西班牙)
• teredo.ipv6.microsoft.com (美国 雷蒙德) (Windows XP/2003/Vista/7/2008 系统默认设置)
• teredo.ngix.ne.kr (韩国)
• teredo.managemydedi.com (美国 芝加哥)

设置方法：

netsh interface ipv6 set teredo enterpriseclient teredo.managemydedi.com. 60 34567

检查状态：

netsh interface ipv6 show teredoTeredo Parameters
---------------------------------------------
Type                    : enterpriseclient
Server Name             : teredo-debian.remlab.net.
Client Refresh Interval : 60 seconds
Client Port             : 34567
State                   : qualified
Client Type             : teredo client
Network                 : managed
NAT                     : symmetric (address)
NAT Special Behaviour   : UPNP: Yes, PortPreserving: Yes
Local Mapping           : 192.168.1.103:34567
External NAT Mapping    : 49.75.31.52:34567

/!\注意：已知Windows系统中应用程序无法通过Teredo接口进行DNS解析

Due to current absence of Teredorelays on the Internet, connections to native IPv6 addresses are unlikely to succeed over the Teredo interface. If WSAConnectByName is called, Windows Vista will not issue AAAA queries when Teredo is the only IPv6 capable interface available. This ensures that native IPv6 addresses are not obtained as a destination and that connections are attempted over IPv4, which has the highest chance of success. In order to obtain IPv6 addresses when Teredo is the only IPv6 capable interface, anapplication must explicitly use the Dns Query API for AAAA records.

ISATAP:

注意：需要PC机具有公网IPv4地址，不支持NAT后的主机访问
目前教育网上大部分高校均提供ISATAP隧道：

• 上海交通大学isatap.sjtu.edu.cn
• 北京邮电大学isatap.bupt.edu.cn
• 清华大学isatap.tsinghua.edu.cn和59.66.4.50
• 华中科技大学isatap.hust.edu.cn
• 台湾：tb.ipv6.apol.com.tw
• 台湾 isatap.ipv6.chttl.com.tw(202.39.142.146)
• 韩国 isatap.ngix.ne.kr(203.254.38.129)
• 波兰 isatap.icpnet.pl(62.21.98.6)

设置方法：

netsh interface ipv6 set teredo disable
netsh interface ipv6 6to4 set state disable
netsh interface ipv6 isatap set router isatap.sjtu.edu.cn
netsh interface ipv6 isatap set state enable

6to4:

注意：需要PC机具有公网IPv4地址，不支持NAT后的主机访问
目前教育网上大部分高校均提供6to4隧道：

• 上海交大 202.112.26.246
• 北京大学 222.29.159.10
• 6to4.ipv6.chttl.com.tw(202.39.142.146)
• infonet.ipv6.ustc.edu.cn(202.38.75.75)
• kddilab.6to4.jp(202.255.45.5)
• 6to4.ngix.ne.kr(203.254.38.130)
• 6to4.ipv6.microsoft.com(131.107.33.60,192.88.99.1)

设置方法：

netsh interface ipv6 6to4 set state enable

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