dns_name_toregion
dns_name_toregion(&tname, &node->r);
dns_name_toregion(dns_name_t *name, isc_region_t *r);
dns_name_toregion(&key->name, &r1);
dns_name_toregion(key->algorithm, &r2);
dns_name_toregion(name, &r);
dns_name_toregion(&soa->origin, ®ion);
dns_name_toregion(&soa->contact, ®ion);
dns_name_toregion(&key->name, &r);
dns_name_toregion(&tsig.algorithm, &r);
dns_name_toregion(&tsigkey->name, &r);
dns_name_toregion(tsigkey->algorithm, &r);