408     def hashret(self):  member in IP
412             return self.payload.payload.hashret()
414             return self.payload.hashret()
416             return struct.pack("B", self.proto) + self.payload.hashret()
419                     + struct.pack("B",self.proto) + self.payload.hashret())
420         return struct.pack("B", self.proto) + self.payload.hashret()
539     def hashret(self):  member in TCP
541             return struct.pack("H",self.sport ^ self.dport)+self.payload.hashret()
543             return self.payload.hashret()
613     def hashret(self):  member in UDP
614         return self.payload.hashret()
699     def hashret(self):  member in ICMP
701             return struct.pack("HH",self.id,self.seq)+self.payload.hashret()
702         return self.payload.hashret()