def __create(self, opcode):
        tftpassert(self.classes.has_key(opcode),
                   "Unsupported opcode: %d" % opcode)

        packet = self.classes[opcode]()

        return packet
Removes a fixed IP from instance from specified network.
dataset/ETHPy150Open msoulier/tftpy/tftpy/TftpPacketFactory.py/TftpPacketFactory.__create--crossover with--dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/network/api.py/API.remove_fixed_ip_from_instance