def __init__(self, *args, **kwargs):
"""Constructor."""
self._seqno, self._mode = 0, None
self._payload = None
# set parameters
self.delay = None
self.nsent, self.nrcvd = 0, 0
self.dest, self.plen = None, None
self.recv, self.send = SimEvent(), SimEvent()
self.recvbuffer = {}
Element.__init__(self, *args, **kwargs)
