解决docker 容器内访问宿主机“No route to host”的问题
请顺序运行以下命令：
1 nmcli connection modify docker0 connection.zone trusted 2 3 systemctl stop NetworkManager.service 4 firewall-cmd --permanent --zone=trusted --change-interface=docker0 5 systemctl start NetworkManager.service 6 nmcli connection modify docker0 connection.zone trusted 7 systemctl restart docker.service
原文：https://blog.csdn.net/iouczp/article/details/80300500