WARNING: IPv4 forwarding is disabled. Networking will not work.
解决办法:
$ vi /etc/sysctl.conf 或者 $ vi /usr/lib/sysctl.d/00-system.conf
添加如下代码:net.ipv4.ip_forward=1
重启network服务
$ systemctl restart network
查看是否修改成功
$ sysctl net.ipv4.ip_forward
如果返回为“net.ipv4.ip_forward = 1”则表示成功了