Library share restriction only while client on local network

Hello,

as an user with the very limited upload speed I would like to be able to limit my library shares only to users while on my local network. Right now there is no way to limit this, so my family is eating my upload bandwidth unexpectedly.

Would love to have this feature as well. I also have a limited upload speed and to open my Plex server to the home users in my account would use up my bandwidth and I would lag when playing online games.