debian 13

nano /etc/network/interfaces.d/ipv6.conf

auto he-ipv6
iface he-ipv6 inet6 v4tunnel

    address 2600:1111:8888:: 	(这里2001:470:a:8888::2直接改成2600:1111:8888::/48的地址)    netmask 48  (64改为48)    endpoint 216.218.221.42    local 192.x.x.x    ttl 255    gateway 2001:470:35:590::1

reboot