IPV6_MULTICAST_LOOP(2const)                        IPV6_MULTICAST_LOOP(2const)

NAME
       IPV6_MULTICAST_LOOP - loop back sent multicast packets to local sockets

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_MULTICAST_LOOP,
                      const int *enable, sizeof(int));
       int getsockopt(int sockfd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
                      int *enabled, sizeof(int));

DESCRIPTION
       Control whether the socket sees multicast packets that it has send
       itself.

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

HISTORY
       IPV6_MULTICAST_LOOP
              POSIX.1-2001.

SEE ALSO
       IP_MULTICAST_LOOP(2const), IPPROTO_IPV6(2const), setsockopt(2), ipv6(7)

Linux man-pages 6.17              2026-01-05       IPV6_MULTICAST_LOOP(2const)