/usr/bin/ovs-vlan-test:432: DeprecationWarning: currentThread() is deprecated, use current_thread() instead
  if th != threading.currentThread():
/usr/bin/ovs-vlan-test: Test vlan connectivity
usage: /usr/bin/ovs-vlan-test server vlan

The following options are also available:
  -s, --server                run in server mode
  -h, --help                  display this help message
  -V, --version               display version information