nest
int off = sizeof(struct ip6_hdr), nest;
nest = 0;
if (ip6_hdrnestlimit && (++nest > ip6_hdrnestlimit)) {
static void nest(void);
static void Fdrop (void) { nest(); Dfalse(); }
static void Fpass (void) { nest(); Pelif(); }
static void Ftrue (void) { nest(); Strue(); }
static void Ffalse(void) { nest(); Sfalse(); }