pptp VPN connections fail with 3.18

Hi all, my pptp VPN connections fail when using 3.18 while they work fine on 3.17, openvpn connections work just fine on 3.18. I'm running Debian Wheezy 32bit on a IBM T400, my kernel configs are here: 3.17: https://gist.github.com/2974aa489986d6fc26e3 3.18: https://gist.github.com/8f0c4d4b52cd63bbc053 I can't see the difference, can you experts spot the issue or please help me to find the issue? What other information do you need? Cheers jan