Installed virtual machine Suddenly can't surf the internet, the error is very strange, the specific error is as follows

installed virtual machine suddenly can't surf the internet, the error is very strange, the specific error is as follows:

/etc/init.d/network restart

Restarting network (via Systemctl): Job for Network.service failed because the control process exited with error code. "Systemctl status Network.service" and "Journalctl-xe" for details.

[Failed]

Use the Systemctl status Network.service command to see the results as follows:

Network.service-lsb:bring Up/down Networking

Loaded:loaded (/etc/rc.d/init.d/network)

Active: failed (Result:exit-code) since three 2016-08-17 11:34:36 CST; 54s ago

Docs:man:systemd-sysv-generator (8)

process:3847 execstart=/etc/rc.d/init.d/network Start (code=exited, status=1/failure)

August 11:34:36 python.cn network[3847]: Rtnetlink answers:file exists

August 11:34:36 python.cn network[3847]: Rtnetlink answers:file exists

August 11:34:36 python.cn network[3847]: Rtnetlink answers:file exists

August 11:34:36 python.cn network[3847]: Rtnetlink answers:file exists

August 11:34:36 python.cn network[3847]: Rtnetlink answers:file exists

August 11:34:36 python.cn network[3847]: Rtnetlink answers:file exists

August 11:34:36 python.cn systemd[1]: Network.service:control process exited, code=exited Status=1

August 11:34:36 python.cn systemd[1]: Failed to start lsb:bring Up/down.

August 11:34:36 python.cn systemd[1]: unit Network.service entered failed state.

August 11:34:36 python.cn systemd[1]: Network.service failed.

Check the system log for the following error:

Aug 11:34:36 python network:rtnetlink answers:file exists

Aug 11:34:36 python network:rtnetlink answers:file exists

Aug 11:34:36 python network:rtnetlink answers:file exists

Aug 11:34:36 python network:rtnetlink answers:file exists

Aug 11:34:36 python network:rtnetlink answers:file exists

Aug 11:34:36 python network:rtnetlink answers:file exists

Aug 11:34:36 python network:rtnetlink answers:file exists

Aug 11:34:36 python network:rtnetlink answers:file exists

Aug 11:34:36 python network:rtnetlink answers:file exists

Aug 11:34:36 python Systemd:network.service:control process exited, code=exited Status=1

Aug 11:34:36 python systemd: Failed to start lsb:bring Up/down.

Aug 11:34:36 python systemd:unit Network.service entered failed state.

Aug 11:34:36 python systemd:network.service failed.

Aug 11:36:28 python systemd:starting lsb:bring up/down networking ...

Aug 11:36:29 python network: Opening loopback interface: Unable to load file '/etc/sysconfig/network-scripts/ifcfg-lo '

Aug 11:36:29 Python Network: Unable to load file '/etc/sysconfig/network-scripts/ifcfg-lo '

Aug 11:36:29 Python Network: Unable to load file '/etc/sysconfig/network-scripts/ifcfg-lo '

Aug 11:36:29 Python Network: Unable to load file '/etc/sysconfig/network-scripts/ifcfg-lo '

Aug 11:36:29 python network: [OK]

Aug 11:36:29 python network: Opening interface eno16777736: Error: Activating connection failed: No suitable device found for thisconnection.

after checking, confirm that the/etc/sysconfig/network-scripts/ifcfg-lo file exists. Where did the problem arise? Can not, had to Baidu a bit, Baidu came out of the result is basically the same.

Baidu Answer:

MAC address is wrong, modify MAC address.

Maybe someone really is a mac problem, but somehow it's impossible to change the MAC address unless you add a new network card or a cloned virtual machine.

I really laugh, the world Baidu article a big copy ah ...

There is no way, Google it, a chance to see an article, to the effect of the system with the NetworkManager this management kit has relations, turn off can be resolved.

Try this:

systemctl Stop NetworkManager

systemctl Disable NetworkManager

Removed Symlink/etc/systemd/system/multi-user.target.wants/networkmanager.service.

Removed Symlink/etc/systemd/system/dbus-org.freedesktop.networkmanager.service.

Removed Symlink/etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.

Restart Network:

systemctl start Network.service

Ifconfig |grep Eno

Eno16777736:flags=4163<up,broadcast,running,multicast> MTU 1500

inet 192.168.1.192 netmask 255.255.255.0 broadcast 192.168.1.255

Inet6 fe80::20c:29ff:fe3d:b305 Prefixlen ScopeID 0x20<link>

Ether 00:0c:29:3d:b3:05 Txqueuelen 1000 (Ethernet)

RX Packets 2 bytes (120.0 B)

RX errors 0 dropped 0 overruns 0 frame 0

TX Packets bytes 3551 (3.4 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

The network starts normally and accesses normally.