RTF_PREF         1202 net/ipv6/ndisc.c 		rt->rt6i_flags |= (rt->rt6i_flags & ~RTF_PREF_MASK) | RTF_PREF(pref);
RTF_PREF          510 net/ipv6/route.c 				 (rt->rt6i_flags & ~RTF_PREF_MASK) | RTF_PREF(pref);
RTF_PREF         1685 net/ipv6/route.c 				  RTF_UP | RTF_PREF(pref),
RTF_PREF         1735 net/ipv6/route.c 				  RTF_UP | RTF_EXPIRES | RTF_PREF(pref),