ifr_broadaddr
(*end)->ifa_broadaddr = malloc(sizeof(ifr->ifr_broadaddr));
memcpy((*end)->ifa_broadaddr, &ifr->ifr_broadaddr,
sizeof(ifr->ifr_broadaddr));
(*end)->ifa_broadaddr = malloc(sizeof(ifr->ifr_broadaddr));
memcpy((*end)->ifa_broadaddr, &ifr->ifr_broadaddr,
sizeof(ifr->ifr_broadaddr));