

Hmm Are you wedded to that particular Mac address? If not, shut down the VM, delete the virtual Network card, then make a new virtual Network card. Copy paste the Mac of that new card into pfsense with the static mapping, and fire up the VM. See what happens.
If that doesn’t work, I remember something it was possible for proxmox to do some kind of routed Network system. To investigate that, delete all static mappings, fire up the VM, and just look at what Mac address it shows getting the DHCP lease. Is it the one that shows as being assigned to the VM?



Here’s the short version.
A normal battery is a sealed cell. It has a positive and negative electrode, with an electrolyte between them. Usually many layers of this. When you charge it, a chemical change happens. When you discharge it, that chemical change is undone.
A redox flow battery uses fixed electrodes, but a liquid electrolyte that can be pumped and stored. This means you can increase overall storage capacity simply by adding more electrolyte tanks, without needing more electrodes. Think of it like a generator with a bigger gas tank.
The whole vanadium thing is just one of the metals used in the battery. There’s a few kind of redox flow batteries using different chemistries