I am making a assumption here- scenario:
-Wifi Calling is turned on in your sim settings, (like most of us)
-You turn on a vpn connection
-Your wifi calling that you completely forgot about is being routed through the vpn - This could be a good thing or bad thing.
There should be a setting that keeps the epdg.epc...pub.3gppnetwork.org connection from being routed through a vpn. Like a toggle or setting somewhere. <--feature request
This is must be one heck of a big honeypot for those who think they are being clever. lol