Netplan 使用 HE IPv6 Tunnel

修改 Netplan 配置文件，通常是：/etc/netplan/50-cloud-init.yaml
添加以下结构👇

network:
  tunnels:
    he-ipv6:
      mode: sit
      # IPv6 Tunnel Endpoints|Server IPv4 Address
      remote: 66.220.18.42
      # Local IPv4 | NAT-Address
      local: 204.194.52.86
      addresses:
        # IPv6 Tunnel Endpoints|Client IPv6 Address>/64
        - 2001:470:c:1271::2/64
      routes:
        - to: default
          # IPv6 Tunnel Endpoints|Server IPv6 Address
          via: 2001:470:c:1271::1

应用更改，执行命令

netplan apply

参考文档：Connecting an IP tunnel – Netplan Documentation, Properties for device type tunnels – Netplan documentation, How to connect to an IPv6 over IPv4 tunnel – Netplan documentation