1·配置路由表

默认路由
```
ip -4 route
```
```
ip -6 route
```

测试网关连通性

ping4 xx.xx.xx.xx

ping6 xx.xx.xx.xx.xx.xx

修改默认路由

sudo ip -4 route del default via xx.xx.xx.xx
sudo ip -4 route add default via xx.xx.xx.xx

sudo ip -6 route del default via xx.xx.xx.xx.xx.xx
sudo ip -6 route add default via xx.xx.xx.xx.xx.xx

ip -4 route

ip -6 route

注意：路由可在vps面板查找

2·网络接口配置

修改配置文件

cd /etc/network

cd /etc/network/interfaces.d

标准配置

# This file is generated from information provided by the datasource.  Changes
# to it will not persist across an instance reboot.  To disable cloud-init's
# network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/xxxx.cfg with the following:
# network: {config: disabled}
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
  #address xx.xx.xx.xx
  address xx.xx.xx.xx/23

  #子网掩码
  netmask 255.255.255.0

  #dns-nameservers xx.xx.xx.xx xx.xx.xx.xx
  dns-nameservers 1.1.1.1

  #网关ipv4
  gateway xx.xx.xx.xx

# control-alias eth0
iface eth0 inet6 static
  #address xx.xx.xx.xx.xx.xx
  address xx.xx.xx.xx.xx.xx/48

  #子网掩码
  netmask 64

  #dns-nameservers xx.xx.xx.xx xx.xx xx.xx.xx.xx xx.xx

  #网关ipv6
  gateway xx.xx.xx.xx.xx.xx

重启网络服务
```
systemctl restart networking
```

vps网络配置

1·配置路由表

2·网络接口配置