ip_mreq_source(2type) ip_mreq_source(2type)

ip_mreq_source - IP multicast request source

Standard C library (libc)

#include <netinet/in.h>
struct ip_mreq_source {
    struct in_addr  imr_multiaddr;   /* IP multicast group address */
    struct in_addr  imr_interface;   /* IP address of local interface */
    struct in_addr  imr_sourceaddr;  /* IP address of multicast source */
};

The ip_mreq_source structure is similar to the ip_mreqn(2type) structure.

.imr_multiaddr
The address of the multicast group the application wants to join or leave.
.imr_interface
The address of the local interface with which the system should join or leave the multicast group.
.imr_sourceaddr
The address of the source the application wants to receive data from.

Linux 2.4.22, Linux 2.5.68.

IP_ADD_SOURCE_MEMBERSHIP(2const), IP_BLOCK_SOURCE(2const), IP_DROP_SOURCE_MEMBERSHIP(2const), IP_UNBLOCK_SOURCE(2const), ip(7).

2025-11-25 Linux man-pages 6.17