VirtualBox: Failed to open/create the internal network 'HostInterfaceNetworking-en0' (VERR_SUPDRV_COMPONENT_NOT_FOUND)

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Mattias Geniar, November 27, 2019

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There’s an annoying little bug in VirtualBox that can cause your network config in the VM to become invalid after a reboot of your host Mac.

Error message: Failed to open/create the internal network ‘HostInterfaceNetworking-en0’

The error is like this:

Failed to open/create the internal network 'HostInterfaceNetworking-en0'

Failed to open/create internal network

The fix in my case wasn’t to change any of the settings in Virtualbox.

Here’s what was happening on my machine: the VM that needed to boot was a PiHole DNS server. It’s our home DNS server. It has IP

My DHCP is distributing that DNS server to all clients. Including my host mac. Bit of a chicken/egg issue there.

It looks like VirtualBox (or Mac, I’m not sure) tries to validate the network settings before setting up a bridge on the network. It tries to validate that IP address is a valid nameserver that can respond to queries.

But since the VM isn’t booted, that IP is offline …

Mac OS network settings

My fix was to configure a static IP for my DNS server on the host Mac, something like Google’s After I changed that, my problem magically went away and the VM can boot without error message.

Downside: my host Mac is no longer protected via the PiHole …

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