https://bugs.launchpad.net/fuel/+bug/1474210# modprobe nf_conntrack_proto_gre
# cat /etc/modules
# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
nf_conntrack_proto_gre
