* Use IPv6 address for the test
* Don't use static strings, use char*
* Don't call them static if they are in anonymous namespace
* Use getaddrinfo to get the (slightly system dependant) address structure
* Use protocol field (even if it probably doesn't matter for SOCK_STREAM
  and SOCK_DGRAM)
* Be more careful about releasing resources in error states (even if
  it's a test and they would terminate on the error anyway)