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Accepted
lewis4u
Asked: 2016-12-20 00:35:17 +0800 CST

virtual machine loses internet connection if anything happens to host internet connection

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I am using Virtual Box and if i lose internet connection or anything happens with my network adapter on host machine i will lose the internet connection on my Virtual Machine.

Even if i connect again, the host is fine but my Virtual Machine can't connect, i need to restart it in order to get internet.

Is there a way to restart networking on the Virtual Machine somehow without rebooting the whole Virtual Machine?

update:

i have tried this command:

sudo /etc/init.d/networking restart

but it just hangs and nothing happens.

virtualbox-networking

2 Answers

  1. Best Answer

    This problem is very familiar as it seems and I have experimented a little and it turns out that you can change the network adapter while the VM is running here:

    enter image description here

    and then change only the Attached to: option to NAT or Bridged Adapter (mine was on Bridged adapter so i changed it to NAT).

    enter image description here enter image description here

    and click OK. And then change it again to which it was before and again click on OK to accept it.

    Now go back to your VM terminal and run this command

    sudo /etc/init.d/networking restart

    Update:

    for Ubuntu 18|20 run

    sudo apply netplan

    to restart Networking

    And the internet connection will work without reseting the VM.

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  2. Something that works for me is to turn off the network adapter and then turn it back on (go to the drop down box next to the battery icon in the far top right corner of the VM display and then do "Wired Connected" | "Turn Off" and then Turn On). That seems to jolt it out of its slumber. It is nevertheless very annoying as it seems like its up for about 10 or 15 minutes before it goes down again

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