code: func (h *Handle) XfrmStateDel(state *XfrmState) error {
  	_, err := h.xfrmStateGetOrDelete(state, nl.XFRM_MSG_DELSA)
  	return err
  }
docs: // XfrmStateDel will delete an xfrm state from the system. Note that
  // the Algos are ignored when matching the state to delete.
  // Equivalent to: `ip xfrm state del $state`