gre_allow         116 net/if_gre.c   int gre_allow = 0;
gre_allow         342 net/if_gre.c   		if (gre_allow == 0) {
gre_allow         143 net/if_gre.h   extern  int gre_allow;   
gre_allow         221 netinet/ip_gre.c 	if (!gre_allow) {
gre_allow         367 netinet/ip_gre.c                 return (sysctl_int(oldp, oldlenp, newp, newlen, &gre_allow));