@Curtis
You can configure routing to allow access to entire network. I am using an Opnsense router to provide routing and firewall so that my laptop is able to connect from anywhere. It also limits the collision domains so that all local traffic (arp and what not) doesn't traverse the wan like on a bridge.
I'm also working on a lab with zerotier, Opnsense and a ER-x to use OSPF for dynamic routing.