in6addr_loopback
----------------

Documentation:

Host Address Data Type (libc).

Gnulib module: ---

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

  * This constant is missing on some platforms: Mac OS X 10.5, Minix 3.1.8, HP-UX 11.00, IRIX 6.5, Cygwin 1.5.x, mingw, MSVC 14, Android 6.0.