Host文件位置：
/etc/resolv.conf

一、nat64.net

https://nat64.net/

2a01:4f9:c010:3f02::1
2a00:1098:2c::1
2a01:4f8:c2c:123f::1

二、www.trex.fi

http://www.trex.fi/2011/dns64.html

2001:67c:2b0::4
2001:67c:2b0::6

三、go6lab.si

https://go6lab.si/current-ipv6-tests/nat64dns64-public-test/

2001:67c:27e4:15::6411
2001:67c:27e4::64

四、nat64.xyz

https://nat64.xyz/

 2001:67c:2b0::4