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)