hubport connectivity problems

[Eric Nichols (DirWiz)]

Long time user, first time poster...

My setup is simple.  Debian host running qemu 7.2.0 and 2 guest (Windows 
2010 workstation & 2022 server).  My goal is to setup a private guest 
only network (no connection to host) with hubport.

Based on the docs I've tried:
-netdev hubport,hubid=0,id=hub0 -device virtio-net-pci,netdev=hub0

There is also the second option of:
-nic hubport,hubid=0,model=virtio-net-pci

And also small mention that a hubport 0 will be setup if you just use a 
virtual adapter and don't connect it to anything:
-net nic,model=virtio-net-pci,macaddr=52:54:00:00:00:03

I did static IPs on both of the guests but can't ping or connect over TCP.
Any ideas?

TIA.