NEXTHDR_GRE       766 net/ipv6/ip6_gre.c 			    NEXTHDR_GRE);
NEXTHDR_GRE      1046 net/ipv6/ip6_gre.c 			   NEXTHDR_GRE);
NEXTHDR_GRE      1346 net/ipv6/ip6_gre.c 	ipv6h->nexthdr = NEXTHDR_GRE;