This one is driving me nuts, so I thought I'd do a quick outsource to you guys for some added inspiration!
My main office network has a cluster of servers running on the 192.168.0.x subnet. The workstations are on the 192.168.1.x subnet, with a WatchGuard firewall sitting between them, as well as to the Internet. It also manages our branch office site-to-site VPN connections. I have most configured for both main office subnets, more for my convenience than anything else.
One of the branch offices has a Toshiba e-Studio 5520XPS color multi-function copier/printer. A user from one of our affiliated companies (which is also connected to us via VPN) is now at this site to replace an employee who recently left. On the surface, this should have no bearing to the situation, as this user's laptop (A Mac running Windows using Boot Camp) is...