13  (exist,new) -> 0,0 when "PVC create" or if "link unreliable"
18 	     -> 1 when "PVC up" and (exist,new) = 1,0
21  (exist,new,active) = FULL STATUS if "link reliable"
25  exist = new = not used
123 		unsigned int exist: 1;  member
446 		    !pvc->state.exist ? "deleted" :  in fr_log_dlci_active()
509 			if (state(hdlc)->reliable && !pvc->state.exist) {  in fr_lmi_send()
510 				pvc->state.exist = pvc->state.new = 1;  in fr_lmi_send()
516 			    pvc->state.exist && !pvc->state.new) {  in fr_lmi_send()
564 				pvc->state.exist = pvc->state.active = 1;  in fr_set_link_state()
573 			pvc->state.exist = pvc->state.active = 0;  in fr_set_link_state()
813 			pvc->state.exist = 1;  in fr_lmi_recv()
818 			    !pvc->state.exist) {  in fr_lmi_recv()
833 		if (pvc->state.deleted && pvc->state.exist) {  in fr_lmi_recv()
836 			pvc->state.exist = 0;  in fr_lmi_recv()