IPSET_EXT_DESTROY
if (set->dsize && set->extensions & IPSET_EXT_DESTROY)
if (set->extensions & IPSET_EXT_DESTROY)
.type = IPSET_EXT_COMMENT | IPSET_EXT_DESTROY,
if (set->extensions & IPSET_EXT_DESTROY)
if (set->extensions & IPSET_EXT_DESTROY && ext_destroy)