Hi Wei-Chuan Yu,
let me see if I understood correctly:
- connect an OpenWRT VM on virtualbox to OpenWISP
- set up a template on OpenWISP which will reconfigure the wifi on the OpenWRT VM
- propagate this change to the machine which hosts the OpenWRT VM
If that's the case, I don't know, I don't think so, and even if it was possible, I wouldn't want to try to do it, it sounds like one of those things in which many steps can go wrong.
Did I understand correctly and if yes, why do you want to do that?
Federico