How to apply for a free ipv6 address

If you don't have a native ipv6 address, you can try the following method to apply for a free ipv6 address.

// Set up the Teredo server. The default is: win10.ipv6.microsoft.com, or you can change it to something else.

   Netsh interface teredo set state enterpriseclient server=default
  
   // test IPv6 connection
   Ping -6 ipv6.test-ipv6.com
   Ping -6 [2001:470:1:18::125]

   // Reset IPv6 configuration
   Netsh interface ipv6 reset

Known issues that can be caused:

Logging into a remote ipv6 server with a non-native ipv6 address can be very slow.

Even dropped, you can clear the above configuration