# Current code ```python def time(): NTP_QUERY = bytearray(48) NTP_QUERY[0] = 0x1B addr = socket.getaddrinfo(host, 123)[0][-1] s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) try: s.settimeout(timeout) s.sendto(NTP_QUERY, addr) msg = s.recv(48) finally: s.close() val = struct.unpack("!I", msg[40:44])[0] ``` # Proposal ```python msg, src = s.recvfrom(48) # Right host AND a full 48-byte reply. Skip spoofed/runt packets if src[0] == addr[0] and len(msg) >= 48: # got the response else: # not from the right host or packet too short # that may break on -> val = struct.unpack("!I", msg[40:44])[0] ```