kalae % ./udpserv01
9-byte datagram from 206.62.226.33.41164, to 206.62.226.35, recv i/f = ef0
13-byte datagram from 206.62.226.65.1057, to 206.62.226.95, recv i/f = we0 (broadcast)
4-byte datagram from 206.62.226.33.41176, to 224.0.0.1, recv i/f = ef0 (multicast)
20-byte datagram from 127.0.0.1.4632, to 127.0.0.1, recv i/f = lo0 (datagram truncated)
9-byte datagram from 206.62.226.33.41178, to 206.62.226.66, recv i/f = ef0