Linux cli command inet_ntop

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command inet_ntop and provides detailed information about the command inet_ntop, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the inet_ntop.

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NAME 🖥️ inet_ntop 🖥️

convert IPv4 and IPv6 addresses from binary to text form

LIBRARY

Standard C library (libc, -lc)

SYNOPSIS

#include <arpa/inet.h>
const char *inet_ntop(int af, const void *restrict src,
 char dst[restrict .size], socklen_t size);

DESCRIPTION

This function converts the network address structure src in the af address family into a character string. The resulting string is copied to the buffer pointed to by dst, which must be a non-null pointer. The caller specifies the number of bytes available in this buffer in the argument size.

inet_ntop() extends the inet_ntoa(3) function to support multiple address families, inet_ntoa(3) is now considered to be deprecated in favor of inet_ntop(). The following address families are currently supported:

AF_INET
src points to a struct in_addr (in network byte order) which is converted to an IPv4 network address in the dotted-decimal format, “ddd.ddd.ddd.ddd”. The buffer dst must be at least INET_ADDRSTRLEN bytes long.

AF_INET6
src points to a struct in6_addr (in network byte order) which is converted to a representation of this address in the most appropriate IPv6 network address format for this address. The buffer dst must be at least INET6_ADDRSTRLEN bytes long.

RETURN VALUE

On success, inet_ntop() returns a non-null pointer to dst. NULL is returned if there was an error, with errno set to indicate the error.

ERRORS

EAFNOSUPPORT
af was not a valid address family.

ENOSPC
The converted address string would exceed the size given by size.

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

InterfaceAttributeValue

inet_ntop()

Thread safetyMT-Safe locale

STANDARDS

POSIX.1-2008.

HISTORY

POSIX.1-2001.

Note that RFC 2553 defines a prototype where the last argument size is of type size_t. Many systems follow RFC 2553. glibc 2.0 and 2.1 have size_t, but 2.2 and later have socklen_t.

BUGS

AF_INET6 converts IPv4-mapped IPv6 addresses into an IPv6 format.

EXAMPLES

See inet_pton(3).

SEE ALSO

getnameinfo(3), inet(3), inet_pton(3)

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