IPV6_RTHDR(2const)

NAME
IPV6_RTHDR, IPV6_AUTHHDR, IPV6_DSTOPTS, IPV6_HOPOPTS, IPV6_FLOWINFO, IPV6_HOPLIMIT - set the delivery of control messages for incoming datagrams containing extension headers

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_RTHDR,
               const int *enable, sizeof(int));
int setsockopt(int sockfd, IPPROTO_IPV6, IPV6_AUTHHDR,
               const int *enable, sizeof(int));
int setsockopt(int sockfd, IPPROTO_IPV6, IPV6_DSTOPTS,
               const int *enable, sizeof(int));
int setsockopt(int sockfd, IPPROTO_IPV6, IPV6_HOPOPTS,
               const int *enable, sizeof(int));
int setsockopt(int sockfd, IPPROTO_IPV6, IPV6_FLOWINFO,
               const int *enable, sizeof(int));
int setsockopt(int sockfd, IPPROTO_IPV6, IPV6_HOPLIMIT,
               const int *enable, sizeof(int));

DESCRIPTION
Set delivery of control messages for incoming datagrams containing extension headers from the received packet.

IPV6_RTHDR
    delivers the routing header.

IPV6_AUTHHDR
    delivers the authentication header.

IPV6_DSTOPTS
    delivers the destination options.

IPV6_HOPOPTS
    delivers the hop options.

IPV6_FLOWINFO
    delivers an integer containing the flow ID.

IPV6_HOPLIMIT
    delivers an integer containing the hop count of the packet.

The control messages have the same type as the socket option.

All these header options can also be set for outgoing packets by putting the appropriate control message into the control buffer of sendmsg(2).

Allowed only for SOCK_DGRAM or SOCK_RAW sockets.

ERRORS
See IPPROTO_IPV6(2const). See setsockopt(2). See ipv6(7).

SEE ALSO
IPPROTO_IPV6(2const), setsockopt(2), cmsg(3), ipv6(7)