uint32_t pacing_rate; // In bytes per second. Default is ~0U (no limit).
int ttl; // Default is -1 (use operating system default).
int multicast_iface_index; // Default is -1 (use operating system default).
uint32_t pacing_rate; // In bytes per second. Default is ~0U (no limit).
int ttl; // Default is -1 (use operating system default).
int multicast_iface_index; // Default is -1 (use operating system default).