2 struct in_addr imsf_multiaddr; /* IP multicast group address */
3 struct in_addr imsf_interface; /* IP address of local interface */
4 uint32_t imsf_fmode; /* Filter-mode */
5 uint32_t imsf_numsrc; /* Number of sources in the
7 struct in_addr imsf_slist[1]; /* Array of source addresses */