unmarshal_str
acl->ip_address_spec = unmarshal_str(r, b);
acl->key_name = unmarshal_str(r, b);
acl->tls_auth_name = unmarshal_str(r, b);
strv[i] = unmarshal_str(r, b);
p->pname = unmarshal_str(r, b);
p->zonefile = unmarshal_str(r, b);
p->zonestats = unmarshal_str(r, b);
p->catalog_member_pattern = unmarshal_str(r, b);
p->catalog_producer_zone = unmarshal_str(r, b);