inzone
wantcont = inzone(fields, nfields);
static bool inzone(char ** fields, int nfields);
uint32_t inzone, outzone;
inzone = outzone = ~0;
in6_setscope(&src_in6, rcvif, &inzone) != 0 ||
inzone != outzone) {
in6_getscopename(&ip6->ip6_src), inzone, outzone);
inzone = outzone = ~0;
if (in6_setscope(&dst_in6, rcvif, &inzone) != 0 ||
inzone != outzone) {
in6_getscopename(&ip6->ip6_dst), inzone, outzone);