Adding a Virtual Router into Home Lab using VyOS

I wanted to add a Virtual Router into my portable Lab – the reason for this was, I want to have a bunch of my VMs on a Private Network for testing – but no and again I want to patch them or give them temporary access to the Internet.  For this I am going to use a VyOS Virtual Machine and test with an Ubuntu Server I have.  I am using VMware Fusion on my Mac but the same process can be used in Workstation but using the Network Editor

For this example, I have created a Custom Network and called vmnet3