OpenWrt as a virtual router for virtual machines

Installing and Using OpenWrt Network and Wireless Configuration
1

Hello,

I'm having trouble configuring the VirtualBox network settings to make this work. I would like to have two virtual machines running, one will be OpenWrt and the other one Ubuntu 20.04. The plan is to use the OpenWrt VM as a virtual router that connects directly to internet (Bridge adapter) and the other vm will connect to internet only through OpenWrt. The host is linux mint.

I was able to install OpenWrt on VirtualBox with the official guide but I'm not completely sure how I can continue with the rest of the process.

I would appreciate any help.

2

Its possible and works quite well.

Did you create two network cards for the OpenWRT-VM as follows? Adapter 1 is LAN for OpenWRT and Adapter 2 is WAN for OpenWRT:

Bildschirmfoto_2022-03-05_09-57-41
Bildschirmfoto_2022-03-05_09-57-411062×382 45.4 KB

The Ubuntu-VM needs to have just one network as follows:

Bildschirmfoto_2022-03-05_09-59-25
Bildschirmfoto_2022-03-05_09-59-25790×249 23.7 KB

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I have the same setup as @Torxgewinde, except for two things:

  1. In the OpenWrt VM, the adapter 2 (WAN) is a "Bridged Network".

  2. For better performance, I select "Paravirtualized network adapter (virtio-net) " in type of hardware for all my VM.

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