test_inet_01 test case is failing on my setup about openweave-core

[jenniexie]

2019-02-26 09:13:28,873 [WeaveInet] [localhost] WeaveInet: Could not find IP address of the receiver node, 01-WifiNode-Rx
E

ERROR: test_weave_inet (main.test_weave_inet_01)

Traceback (most recent call last):
File "/usr/local/google/home/jexie/github/openweave-core/src/test-apps/happy/tests/standalone/inet/test_inet_01.py", line 158, in test_weave_inet
value, data = self.__run_inet_test_between(self.sender, self.receiver, interface, network, transport, prefix, tx_size, rx_tx_length)
File "/usr/local/google/home/jexie/github/openweave-core/src/test-apps/happy/tests/standalone/inet/test_inet_01.py", line 195, in __run_inet_test_between
ret = weave_inet.run()
File "/usr/local/google/home/jexie/github/openweave-core/src/test-apps/happy/test-templates/WeaveInet.py", line 371, in run
self.__pre_check()
File "/usr/local/google/home/jexie/github/openweave-core/src/test-apps/happy/test-templates/WeaveInet.py", line 173, in __pre_check
self.__log_error_and_exit(emsg)
File "/usr/local/google/home/jexie/github/openweave-core/src/test-apps/happy/test-templates/WeaveInet.py", line 102, in __log_error_and_exit
sys.exit(1)
SystemExit: 1

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Ran 1 test in 27.435s