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ReKVM Guest with virtio network driver loses network connectivity 非常感谢各位的回复。 我是在开发测试环境部署的kvm虚拟环境。 @dongshan8 当网络不通的时候，自己会回复，但是中断的时间不确定，有些时候出现约一个小时的中断。 [root@d06-1819 log]# ifconfig br0 br0       Link encap:Ethernet  HWaddr 00:24:E8:5E:61:61             inet addr:10.1.100.X  Bcast:10.1.X.255  Mask:255.255.255.0           inet6 addr: fe80::224:e8ff:fe5e:6161/64 Scope:Link           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1           RX packets:245319 errors:0 dropped:179 overruns:0 frame:0           TX packets:3946 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:0           RX bytes:21523963 (20.5 MiB)  TX bytes:565689 (552.4 KiB) [root@d06-1819 log]# CentOS release 6.7 (Final) Kernel \r on an \m [root@d06-1819 log]# uname -a Linux d06-1819 3.10.96-1.el6.elrepo.x86_64 #1 SMP Fri Jan 29 11:58:12 EST 2016 x86_64 x86_64 x86_64 GNU/Linux [root@d06-1819 log]# rpm -qa|grep kvm qemu-kvm-rhev-tools-0.12.1.2-2.479.el6_7.2.x86_64 qemu-kvm-rhev-0.12.1.2-2.479.el6_7.2.x86_64 [root@d06-1819 log]# rpm -qa|grep vir libvirt-python-0.10.2-54.el6_7.3.x86_64 virt-v2v-0.9.1-5.el6_5.x86_64 libvirt-client-0.10.2-54.el6_7.3.x86_64 libvirt-lock-sanlock-0.10.2-54.el6_7.3.x86_64 libvirt-0.10.2-54.el6_7.3.x86_64 virt-viewer-2.0-7.el6.x86_64 ovirt-release35-006-1.noarch libgovirt-0.3.2-1.el6.x86_64 python-virtinst-0.600.0-29.el6.noarch virt-manager-0.9.0-29.el6.x86_64