Apparently, all those ISP's that are still stuck to PPtP for their clients, recommend them to try starting the VPN with connecting to 10.0.0.138, then default route to ppp0

Man!
Configuring Linux pptp is a real bitch, I mean, Which ISP (in their sane mind) would ever want to start using some protocol which was designed by MSFT? something I don't understand. /me uses PPPoE.