Karaf version- distribution-karaf-0.5.2-20161123.095549-281
3 computes and a controller

none of the computes have tunnels:
[root@centos7-devstack-2c-8g-9502 ~]# ovs-vsctl show
e51f445d-a6f3-47e4-a463-886490913fcc
Manager "tcp:10.0.97.165:6640"
is_connected: true
Manager "tcp:10.0.97.164:6640"
is_connected: true
Manager "tcp:10.0.97.171:6640"
is_connected: true
Bridge br-int
Controller "tcp:10.0.97.171:6653"
is_connected: true
Controller "tcp:10.0.97.165:6653"
is_connected: true
Controller "tcp:10.0.97.164:6653"
is_connected: true
fail_mode: secure
Port "tap02790378-7a"
Interface "tap02790378-7a"
Port br-int
Interface br-int
type: internal
Port "eth1"
Interface "eth1"
ovs_version: "2.5.0"