And by default the pptp driver is not loaded: $ lsmod | grep pptp
it prints nothing. So have to load manually: $ sudo modprobe nf_nat_pptp $ sudo modprobe nf_conntrack_pptp $ lsmod | grep pptp it prints now: nf_nat_pptp 2844 0 nf_conntrack_pptp 5984 1 nf_nat_pptp nf_conntrack_proto_gre 5344 1 nf_conntrack_pptp nf_nat_proto_gre 2080 1 nf_nat_pptp nf_nat 17808 2 nf_nat_pptp,nf_nat_proto_gre nf_conntrack 67608 5 nf_nat_pptp,nf_conntrack_pptp,nf_conntrack_proto_gre,nf_nat,nf_conntrack_ipv4 But anyway, it still doesn't work. -- network-manager-pptp loses MPPE settings https://bugs.launchpad.net/bugs/346768 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs