1. 临时方案

   添加IP

   ip address add 2202:b030:a42d:5dcd::1/64 dev eth0

   删除IP

   ip address del 2202:b030:a42d:5dcd::1/64 dev eth0
   

   注意：以上是命令行执行，网卡要与配置中的对应，不一定就是eth0

2. 永久方案（这里拿IPv6做演示，已知/etc/network/interfaces文件内容）

    auto lo
    iface lo inet loopback
   
    auto eth0
    iface eth0 inet6 static
            address 2202:b030:a42d:5dcd::4b/64
   
    # --- BEGIN PVE ---
            post-up ip route add 2202:b030:a42d:5d00::ffff dev eth0
            post-up ip route add default via 2202:b030:a42d:5d00::ffff dev eth0
            pre-down ip route del default via 2202:b030:a42d:5d00::ffff dev eth0
            pre-down ip route del 2202:b030:a42d:5d00::ffff dev eth0
    # --- END PVE ---
   
    auto eth1
    iface eth1 inet static
            address 192.168.0.75/22
            gateway 192.168.0.1
   

   在配置文件中增加以下类似格式

    auto eth0:2
    iface eth0:2 inet6 static
        address 2202:b030:a42d:5dcd::2/64
   
    auto eth0:3
    iface eth0:3 inet6 static
        address 2202:b030:a42d:5dcd::3/64
   
    auto eth0:4
    iface eth0:4 inet6 static
        address 2202:b030:a42d:5dcd::4/64
   
    auto eth0:5
    iface eth0:5 inet6 static
        address 2202:b030:a42d:5dcd::5/64
   
    auto eth0:6
    iface eth0:6 inet6 static
        address 2202:b030:a42d:5dcd::6/64
   

   然后重启网卡，如果重启网卡不生效可以重启服务器

    ifdown eth0:2 && ifup eth0:2
    ifdown eth0:3 && ifup eth0:3
    ifdown eth0:4 && ifup eth0:4
    ifdown eth0:5 && ifup eth0:5
    ifdown eth0:6 && ifup eth0:6
   

3. 查看IP添加情况

   ifconfig
   

注意：eth0 是 /etc/network/interfaces 中的 IPv6 对应的网卡，需要根据自己实际情况选择。