https://wmatrix.googleplex.com/failures/wifi_matfunc?platforms=veyron_minnie&tests=network_WiFi_MaskedBSSID&days_back=30&releases=53
and 
https://wmatrix.googleplex.com/failures/wifi_matfunc?platforms=veyron_minnie&tests=network_WiFi_MaskedBSSID&days_back=30&releases=54


Traceback (most recent call last):
  File "/usr/local/autotest/client/common_lib/test.py", line 600, in _exec
    _call_test_function(self.execute, *p_args, **p_dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 804, in _call_test_function
    return func(*args, **dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 461, in execute
    dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 347, in _call_run_once_with_retry
    postprocess_profiled_run, args, dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 376, in _call_run_once
    self.run_once(*args, **dargs)
  File "/usr/local/autotest/server/site_tests/network_WiFi_MaskedBSSID/network_WiFi_MaskedBSSID.py", line 42, in run_once
    [config.ssid for config in configurations])
  File "/usr/local/autotest/server/cros/network/wifi_client.py", line 646, in scan
    self.assert_bsses_include_ssids(bss_list, ssids)
  File "/usr/local/autotest/server/cros/network/wifi_client.py", line 312, in assert_bsses_include_ssids
    (ssid, found_bsses))
TestFail: SSID CrOS_Masked1 is not in scan results: [IwBss(bss='00:11:22:33:44:55', frequency=2412, ssid='CrOS_Masked0', security='open', ht=None, signal=-36.0)]

More logs @ https://pantheon.corp.google.com/m/cloudstorage/b/chromiumos-test-logs/o/M53_Reports/Veyron_Minnie_8530.0.0_Matfunc.tar.gz
Note: The router is a whirlwind device.