I'd like to setup OpenWRT in VirtualBox for purposes of testing a network configuration before putting it on a live physical router.
How do the adapter settings relate to the real physical ports on an actual router?
My physical router has a WAN port, 3 LAN ports and the last port is a separate subnet to a DMZ for servers.
In this tutorial they set the first adapter to NAT so the Virtual OpenWRT router can connect to the internet; this appears to me to be the equivalent of the WAN port (but I could be wrong).
They also configure a second adapter which I believe to be the equivalent of one of the physical LAN ports on my physical router.
If I am correct in my assumption here, to add more virtual ports to the router I just need to add another bridged adapter, and to emulate something like load balancing I could simulate dual internet connections coming into the router using another NAT adapter.
Now if the assumptions above are true, then how do I virtually plug an adapter from another vm into the bridged adapter port as I would physically using a wire?