zone_options_create
cfg_parser->zone = zone_options_create(cfg_parser->opt->region);
zopt = zone_options_create(opt->region);
zo = zone_options_create(nsd->options->region);
: zone_options_create(opt->region);
struct zone_options* zone_options_create(region_type* region);
struct zone_options* zopt = zone_options_create(