IPPROTO_IP(2const)

NAME

IPPROTO_IP - Linux IPv4 protocol socket options

LIBRARY

Standard C library (libc, -lc)

SYNOPSIS

#include <netinet/in.h>  /* Definition of IP* constants */
#include <sys/socket.h>

int setsockopt(int sockfd, IPPROTO_IP, int opt, const void val[size], size_t size); int getsockopt(int sockfd, IPPROTO_IP, int opt, void val[size], size_t size);

DESCRIPTION

IP supports some protocol-specific socket options that can be set with setsockopt(2) and read with getsockopt(2). The socket option level for IP is IPPROTO_IP.

The following socket options are supported.

ERRORS

See setsockopt(2). See ip(7).

ENOPROTOOPT: opt is invalid.

HISTORY