Networking KVM：公共网桥在主机上接收IP，但虚拟机不接收
我已在主机上使用单个eth接口创建了br0，它接收IP，我可以通过ssh从网络中的其他主机访问它：Networking KVM：公共网桥在主机上接收IP，但虚拟机不接收,networking,iptables,kvm,Networking,Iptables,Kvm,我已在主机上使用单个eth接口创建了br0，它接收IP，我可以通过ssh从网络中的其他主机访问它： br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.1.50 netmask 255.255.255.0 broadcast 192.168.1.255 inet6 fe80::9ecf:6d35:bc82:c5e1 prefixlen 64 scopeid
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.50 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::9ecf:6d35:bc82:c5e1 prefixlen 64 scopeid 0x20<link>
ether 00:1c:c4:47:ce:72 txqueuelen 1000 (Ethernet)
RX packets 93667 bytes 23521427 (22.4 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 31242 bytes 2603126 (2.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
br0 8000.001cc447ce72 yes enp5s0f1
vnet0
vnet1
br0:flags=4163 mtu 1500
inet 192.168.1.50网络掩码255.255.255.0广播192.168.1.255
inet6 fe80:：9ecf:6d35:bc82:c5e1预桥64作用域ID 0x20
乙醚00:1c:c4:47:ce:72 txqueuelen 1000（以太网）
接收数据包93667字节23521427（22.4 MiB）
接收错误0丢弃0超出0帧0
发送数据包31242字节2603126（2.4 MiB）
发送错误0丢弃0溢出0载波0冲突0
br0 8000.001cc447ce72是enp5s0f1
vnet0
vnet1
# virsh net-list --all
Name State Autostart Persistent
----------------------------------------------------------
host-bridge active yes yes
# cat host-bridge.xml
<network>
<name>host-bridge</name>
<forward mode="bridge"/>
<bridge name="br0"/>
</network>
#virsh网络列表--所有
名称状态自动启动持久化
----------------------------------------------------------
主机网桥激活是是
#cat host-bridge.xml
主桥
你知道我错过了什么吗？我已经查看了主机防火墙，对于家庭网络的br0接口，我有一个/24容差。我有类似的设置，还有一些附加功能，例如绑定和以网桥结尾的VLAN
# No special setting about KVM networking
virsh net-list --all
Name State Autostart Persistent
----------------------------------------------------------
default active yes yes
# VM connected directly to host bridge
cat /etc/libvirt/qemu/MY_VM
...
<interface type='bridge'>
<mac address='52:xx:xx:xx:xx:40'/>
<source bridge='br41'/>
<model type='e1000'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
...
# And this might be your problem
sysctl net.ipv4.ip_forward
net.ipv4.ip_forward = 1
#没有关于KVM网络的特殊设置
virsh网络列表--全部
名称状态自动启动持久化
----------------------------------------------------------
默认活动是是是
#直接连接到主机网桥的虚拟机
cat/etc/libvirt/qemu/MY_-VM
...
...
#这可能是你的问题
sysctl net.ipv4.ip_转发
net.ipv4.ip_forward=1
ip_forwardTRUE