centos7.3 kvm Bridge虚拟机无法上网

[zhutouruili]

宿主机：Red Hat Enterprise Linux Server release 7.3
kvm 虚拟机使用桥接网络
宿主机网络配置：
cat ifcfg-ens192

BOOTPROTO=none
DEVICE=ens192
NM_CONTROLLED=no
ONBOOT=yes
BRIDGE=br0
-----------------------------------------------------------------------------------------------
cat ifcfg-br0

BOOTPROTO=static
DEVICE=br0
TYPE=Bridge
NM_CONTROLLED=no
IPADDR=192.168.1.214
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
ONBOOT=yes
-----------------------------------------------------------------------------------------------
虚拟机网络配置
cat /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
IPADDR=192.168.1.215
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
-----------------------------------------------------------------------------------------------
brctl show
bridge name bridge id STP enabled interfaces
br0 8000.0050568cdf22 no ens192
vnet0
-----------------------------------------------------------------------------------------------
virsh list
Id Name State
----------------------------------------------------
1 centos6.6 running
-----------------------------------------------------------------------------------------------
virsh edit centos6.6

<interface type='bridge'>
<mac address='52:54:00:d6:7e:cc'/>
<source bridge='br0'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
-----------------------------------------------------------------------------------------------
cat /proc/sys/net/ipv4/ip_forward
1
-----------------------------------------------------------------------------------------------
物理机route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default gateway 0.0.0.0 UG 0 0 0 br0
link-local 0.0.0.0 255.255.0.0 U 1003 0 0 br0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 br0
-----------------------------------------------------------------------------------------------
虚拟机route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
link-local * 255.255.0.0 U 1002 0 0 eth0
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
-----------------------------------------------------------------------------------------------
问题现象描述:
宿主机IP 192.168.1.214
虚拟机IP 192.168.1.215 手动设置
宿主机可以ping通网关可以通外网可ping通虚拟机
虚拟机可以ping通宿主机无法ping通网关及外网

[aabbabababaa]

虚拟网卡用的桥接模式？

[zxin1997]

把虚拟机网卡设置成动态ip，查看网段是否有问题。

[yan1375088]

尝试一下，新增一个网卡，然后将他配置成dhcp模式，重启一下机器，再重启一个路由器。感觉是配置静态ip的时候，网卡的mac地址没有被路由器捕获到。