text: from jinja2 import FileSystemLoader, StrictUndefined
  from jinja2.environment import Environment
  
  env = Environment(undefined=StrictUndefined)
  env.loader = FileSystemLoader("./templates/class5/exercise3/")
  
  j2_vars = {"vrf_name": "blue", "rd_number": "100:1", "ipv4_af": True, "ipv6_af": True}
  
  print()
  template_file = "ios_vrf.j2"
  template = env.get_template(template_file)
  cfg = template.render(**j2_vars)
  print(cfg)
  print()
  