@huangzhiyia 我查了下， 还是有不少要求的： 比如你的内部网络得支持 ipv6 ；光猫要桥接模式，路由器拨号，这样 ip v6 才能穿透进来；或者有公网 ip ；
不然没法点对点，就只能走国外中继服务器，就会很慢

@huangzhiyia 我的延迟 200-800ms

你的延迟为什么这么低。。。 我也用你这套方案，延迟 200-800ms

PING 100.92.71.102 (100.92.71.102): 56 data bytes
64 bytes from 100.92.71.102: icmp_seq=0 ttl=64 time=843.898 ms
64 bytes from 100.92.71.102: icmp_seq=1 ttl=64 time=928.732 ms
64 bytes from 100.92.71.102: icmp_seq=2 ttl=64 time=370.714 ms
64 bytes from 100.92.71.102: icmp_seq=3 ttl=64 time=341.876 ms
64 bytes from 100.92.71.102: icmp_seq=4 ttl=64 time=297.533 ms
64 bytes from 100.92.71.102: icmp_seq=5 ttl=64 time=737.868 ms
64 bytes from 100.92.71.102: icmp_seq=6 ttl=64 time=415.212 ms
64 bytes from 100.92.71.102: icmp_seq=7 ttl=64 time=783.162 ms
64 bytes from 100.92.71.102: icmp_seq=8 ttl=64 time=490.822 ms
64 bytes from 100.92.71.102: icmp_seq=9 ttl=64 time=296.946 ms
64 bytes from 100.92.71.102: icmp_seq=10 ttl=64 time=245.758 ms
64 bytes from 100.92.71.102: icmp_seq=11 ttl=64 time=762.705 ms
64 bytes from 100.92.71.102: icmp_seq=12 ttl=64 time=282.212 ms
64 bytes from 100.92.71.102: icmp_seq=13 ttl=64 time=241.131 ms