VM does not automatically reconnect to server after a temporary network disturbance

[MSKS]

Hello,

After updating my laptop from Windows 7 to Windows 10 and using exactly the same VM (Windows 7 guest) I am facing a known I think VirtualBox issue:

In Bridged Adapter Networking mode, after a temporary network disturbance, e.g. start an endless ping and break temporarily the Ethernet connection by unplugging/plugging in the UTP cable, the connection to server does not restore automatically as it did with a Windows 7 host.

I use one of the workarounds reported in the past to restore the connection, without stopping the guest: in VirtualBox Manager, under the Network settings for the guest, I detach the Bridged Adapter (Attached to : None) -> Apply and then back to Bridged Adapter. Attached you can find the ping log from the guest machine as well as the VBoxBugReport logs.

This is a very annoying bug as I usually change between servers under the same guest and I always have to perform the workaround above to restore connectivity.

Note that the same issue under Windows 10 host applies both for VirtualBox 5.1 and 6.0 from where the logs are.

Happy New Year to All!

[Socratis]

Replying to MSKS:

I am facing a known I think VirtualBox issue:

If it's a known issue, you should comment on the ticket that this is reported, not open a duplicate...

Duplicate of #15308.