code: func (h *Handle) LinkAdd(link Link) error {
  	return h.linkModify(link, unix.NLM_F_CREATE|unix.NLM_F_EXCL|unix.NLM_F_ACK)
  }
docs: // LinkAdd adds a new link device. The type and features of the device
  // are taken from the parameters in the link object.
  // Equivalent to: `ip link add $link`