code: func (h *Handler) ServeDHCP(w dhcp6server.ResponseSender, r *dhcp6server.Request) {
  	if err := h.handler(h.ip, w, r); err != nil {
  		log.Println(err)
  	}
  }
docs: // ServeDHCP is a dhcp6.Handler which invokes an internal handler that
  // allows errors to be returned and handled in one place.