Thats right, unless you want to shut those IPs down for 20 hours so that vCenter and vApp dont see it. vApp will return the license in that case. Btw, this 45 day period is a moving window, in case RTOOLs via vApp or standalone get to work any command on that host, the license is again renewed for another 45 days. Support ticket will help you get special rtools to checkin the license if you cannot wait that long or shut donw the IPs for 20 hrs.
I have ESXi servers that drop off the network permanently. How do I unregister (reclaim) the license from a non-existent server. The only way I can think of is to use rpowermt and run a unregister that way. How to I do this via appliance GUI?  Basically, any server that shows up in the "Unmanaged" category will need to be removed.  Thanks.
Unregister license in Powerpath Virtual Appliance 2.0