sldns_wire2str_pkt_buf
size_t slen = (size_t)sldns_wire2str_pkt_buf(data, len, NULL, 0);
sldns_wire2str_pkt_buf(data, len, result, slen+1);
int sldns_wire2str_pkt_buf(uint8_t* data, size_t data_len, char* str,
size_t slen = (size_t)sldns_wire2str_pkt_buf(data, len, NULL, 0);
sldns_wire2str_pkt_buf(data, len, result, slen+1);
int sldns_wire2str_pkt_buf(uint8_t* data, size_t data_len, char* str,