nhn              5073 net/ipv6/route.c 	int nhn = 0;
nhn              5169 net/ipv6/route.c 			if (replace && nhn)
nhn              5186 net/ipv6/route.c 		nhn++;
nhn              5191 net/ipv6/route.c 						  rt_notif, nhn - 1, extack);