NDTPA_UNSPEC			0
NDTPA_IFINDEX			1
NDTPA_REFCNT			2
NDTPA_REACHABLE_TIME		3
NDTPA_BASE_REACHABLE_TIME	4
NDTPA_RETRANS_TIME		5
NDTPA_GC_STALETIME		6
NDTPA_DELAY_PROBE_TIME		7
NDTPA_QUEUE_LEN			8
NDTPA_APP_PROBES		9
NDTPA_UCAST_PROBES		10
NDTPA_MCAST_PROBES		11
NDTPA_ANYCAST_DELAY		12
NDTPA_PROXY_DELAY		13
NDTPA_PROXY_QLEN		14
NDTPA_LOCKTIME			15
NDTPA_QUEUE_LENBYTES		16
NDTPA_MCAST_REPROBES		17
NDTPA_PAD			18