message: feat(robot-server): Clarify "local connection only" error message
diff: @@ -25,8 +25,13 @@ def require_linklocal(handler):
  ipaddr_str = request.headers.get('x-host-ip')
  invalid_req_data = {
  'error': 'bad-interface',
  - 'message': f'The endpoint {request.url} can only be used from '
  - 'local connections'
  + 'message': (
  + f"The endpoint {request.rel_url}"
  + f" can only be used from link-local connections."
  + f" Make sure you're connected to this robot directly by cable"
  + f" and using this robot's wired IP address"
  + f" (not its wireless IP address)."
  + )
  }
  if not ipaddr_str:
  return web.json_response(
  