PTR_CREATE
ptr = PTR_CREATE(p->offset);
*owner_ptr = htons(PTR_CREATE(p->offset));
*owner_ptr = htons(PTR_CREATE(owner_pos));
sldns_buffer_write_u16(buf, PTR_CREATE(LDNS_HEADER_SIZE));
ptr = PTR_CREATE(p->offset);
*owner_ptr = htons(PTR_CREATE(p->offset));
*owner_ptr = htons(PTR_CREATE(owner_pos));