struct in_addr imsf_multiaddr; /* IP multicast group address */
struct in_addr imsf_interface; /* IP address of local interface */
uint32_t imsf_fmode; /* Filter-mode */
struct in_addr imsf_multiaddr; /* IP multicast group address */
struct in_addr imsf_interface; /* IP address of local interface */
uint32_t imsf_fmode; /* Filter-mode */