LAN fails when connected to a VPN server.

Oh interesting for me this one . Have you had any luck yet ? From what you say pre 4.4 may be the key to my tether issue. Maybe rooting is the way for you to modify a rom and remedy the issue

 

Tried an old sg3 with 4.3 android on and I could tether my fire stick and use you tube and mobdro. But still not kodi . Not 100 %but I think your onto something buddie

 

I did find a way to tether .but by the time it had jumped through all the hoops it was a weak ass signal with no range at all

 

Well I am happy with my solution so far . Seeing it is unrooted as well download a wifi client to the laptop . Then pdanet+ on the mobile also a vpn on the mobile . Connect via usb and bingo 4-8Mbps on my amazon fire stick. Running spinz tv in kodi [emoji41]. Although it's not graceful,it works hahaha lol I beat you three network [emoji16][emoji16][emoji16]