to Caci99 All customers use L2TP/IPsec and OVPN, but there is a Keenetic-4GII which has only PPTP! PPTP is dependable on GRE. They have changed how GRE handles first packets ( version 6.44.3 maybe ). If you go to that topic you will see some workarounds how to handle the GRE connections. Thanks for...

to Caci99
All customers use L2TP/IPsec and OVPN, but there is a Keenetic-4GII which has only PPTP!

Hello ! After upgrading from 6.44.2 to 6.44.6, the PPTP stopped working. L2TP and OpenVPN work well. RouterBOARD 750G r3.