Stop NetworkManager from managing your Virtual Box Devices

Several weeks ago I started to use Laravel Homestead for my development environment. One thing that annoyed me since, was the interference with NetworkManager: It tries to manage the devices vboxnet0…vboxnetN, which were created for the virtual machines. To fix this issue I added the following line to my /etc/NetworkManager/NetworkManager.conf:

[keyfile]
unmanaged-devices=interface-name:vboxnet0,interface-name:vboxnet1,interface-name:vboxnet2

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