IPV6_RECVPKTINFO(2const)                              IPV6_RECVPKTINFO(2const)

NAME
       IPV6_RECVPKTINFO - set delivery of the IPV6_PKTINFO control message on
       incoming datagrams

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_RECVPKTINFO,
                      const int *enable, sizeof(int));

DESCRIPTION
       Set delivery of the IPV6_PKTINFO control message on incoming datagrams.
       Such control messages contain a struct in6_pktinfo, as per RFC 3542.

       Allowed only for SOCK_DGRAM or SOCK_RAW sockets.

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

HISTORY
       Linux 2.6.14.

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

Linux man-pages 6.17              2025-12-02          IPV6_RECVPKTINFO(2const)