The following exception unrecoverably kills the network controller

[zadjii]

Exception in thread Thread-4:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/var/lib/nebula/host/function/local_updates.py", line 387, in new_main_thread
    rd = host_obj.update_network_status()
  File "/var/lib/nebula/host/HostController.py", line 202, in update_network_status
    rd = self.change_ip()
  File "/var/lib/nebula/host/HostController.py", line 251, in change_ip
    self.spawn_net_thread()
  File "/var/lib/nebula/host/HostController.py", line 151, in spawn_net_thread
    self.active_net_thread_obj = NetworkThread(external_ip, internal_ip, self)
  File "/var/lib/nebula/host/NetworkThread.py", line 49, in __init__
    self.setup_socket()
  File "/var/lib/nebula/host/NetworkThread.py", line 79, in setup_socket
    raise Exception(rd.data)
Exception: Exception during miniupnpc operation: ConflictInMappingEntry