IF_OPER_UNKNOWN  1369 include/linux/netdevice.h 		dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
IF_OPER_UNKNOWN   533 net/core/rtnetlink.c 		     operstate == IF_OPER_UNKNOWN) &&
IF_OPER_UNKNOWN   540 net/core/rtnetlink.c 		    operstate == IF_OPER_UNKNOWN)