linux中主机虚拟机上网

1. 设置主机网关

2. 关闭br0中的网关

3. 重启网络服务

4. 设置DNS

5.   ping www.baidu.com

    1.vim /etc/sysconfig/network
    2.vim /etc/sysconfig//network-scripts/ifcfg-br0
    3.systemctl restart network
    4.vim /etc/resolv.conf
    5.ping www.baidu.com

    主机变为路由器虚拟机上网

systemctl ststus libvirtd
systemctl status libvirtd
systemctl stop libvirtd
systemctl  restart firewalld.service 
systemctl start libvirtd
firewall-cmd --list
firewall-cmd --list-all

2.编辑虚拟机的网络配置网关设为主机的ip

dns编辑vim /etc/resolv.conf   写入114.114.114.114

    DEVICE=eth0
    BOOTPROTO=none
    IPADDR0=172.25.254.161
    PREFIX0=24
    ONBOOT=yes
    TYPE=Ethernet
    IPV4_FAILURE_FATAL=no
    GATEWAY0=172.25.254.61

3.务必要重启服务

4.ping   www.baidu.com

    systemctl restart network
    ping   www.baidu.com