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10.2.4 inet_ntoa ¶

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9799919799/functions/inet_ntoa.html

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• This function is declared in <winsock2.h> instead of <arpa/inet.h> on some platforms: mingw, MSVC 14.
• POSIX.1-2024 says this function is obsolescent and it is planned to be removed in a future version. Use the function inet_ntop instead.
• The inet_ntoa function need not be reentrant, and consequently is not required to be thread safe. Implementations of inet_ntoa typically write the timestamp into static buffer. If two threads call inet_ntoa at roughly the same time, you might end up with the wrong date in one of the threads, or some undefined string.

Note: inet_ntoa is specific for IPv4 addresses. A protocol independent function is inet_ntop.