DNS64 and NAT64 are IPv6 transition technologies enabling IPv6 only clients to communicate with IPv4 only servers. Our performance measurement tool, dns64perf++, is the word’s first standard DNS64 benchmarking tool that complies with the relevant Internet Draft. Its design and implementation is documented in our new position paper: G. Lencse, D. Bakai, “Design and implementation of a test program for benchmarking DNS64 servers”, IEICE Transactions on Communications, vol. E100-B, no. 6. pp. 948-954, Jun. 2017. DOI: 10.1587/transcom.2016EBN0007