ndisc_is_useropt  211 net/ipv6/ndisc.c 	} while (cur < end && !ndisc_is_useropt(dev, cur));
ndisc_is_useropt  212 net/ipv6/ndisc.c 	return cur <= end && ndisc_is_useropt(dev, cur) ? cur : NULL;
ndisc_is_useropt  260 net/ipv6/ndisc.c 			if (ndisc_is_useropt(dev, nd_opt)) {