NAME
IPV6_MTU - path maximum transmission unit size
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <netinet/in.h> /* Definition of IP* constants */ #include <sys/socket.h>
int setsockopt(int sockfd, IPPROTO_IPV6, IPV6_MTU, const int *val, sizeof(int)); int getsockopt(int sockfd, IPPROTO_IPV6, IPV6_MTU, int *val, sizeof(int));
DESCRIPTION
- getsockopt():
-
Retrieve the current known path MTU of the current socket. Valid only when the socket has been connected.
- setsockopt():
-
Set the MTU to be used for the socket. The MTU is limited by the device MTU or the path MTU when path MTU discovery is enabled.
ERRORS
See IPPROTO_IPV6(2const). See setsockopt(2). See ipv6(7).