IP_UNBLOCK_SOURCE(2const)                            IP_UNBLOCK_SOURCE(2const)

NAME
       IP_UNBLOCK_SOURCE - unblock multicast source

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <netinet/in.h>  /* Definition of IP* constants */
       #include <sys/socket.h>

       int setsockopt(int sockfd, IPPROTO_IP, IP_UNBLOCK_SOURCE,
                      const struct ip_mreq_source *src,
                      sizeof(struct ip_mreq_source));

DESCRIPTION
       Unblock previously blocked multicast source.

       Fails with EADDRNOTAVAIL when given source is not being blocked.

ERRORS
       See IPPROTO_IP(2const).  See setsockopt(2).  See ip(7).

HISTORY
       Linux 2.4.22, Linux 2.5.68.

SEE ALSO
       IPPROTO_IP(2const), setsockopt(2), ip(7)

Linux man-pages 6.17              2025-11-25         IP_UNBLOCK_SOURCE(2const)