@node in6addr_loopback
@subsection @code{in6addr_loopback}
@findex in6addr_loopback

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/in6addr_loopback.html}

Documentation:@*
@ifinfo
@ref{Host Address Data Type,,Host Address Data Type,libc}.
@end ifinfo
@ifnotinfo
@url{https://www.gnu.org/software/libc/manual/html_node/Host-Address-Data-Type.html}.
@end ifnotinfo

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This constant is missing on some platforms:
Minix 3.1.8, HP-UX 11.00, Cygwin 1.5.x, mingw, MSVC 14, Android 6.0.
@end itemize
