https://wmatrix.googleplex.com/unfiltered?suites=wifi_matfunc&tests=network_WiFi_IBSS&days_back=60&releases=60&hide_missing=True&platforms=squawks,expresso,clapper,glimmer,quawks,enguarde,kip,squawks,gnawty,swanky,winky,candy,orco,sumo,ninja,banjo,heli,falco_li,tricky,samus,auron_paine,auron_yuna,rikku,lulu,gandof

Sample Failure:
File "/usr/local/autotest/client/common_lib/test.py", line 615, in _exec
    _call_test_function(self.execute, *p_args, **p_dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 823, in _call_test_function
    return func(*args, **dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 476, in execute
    dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 353, in _call_run_once_with_retry
    postprocess_profiled_run, args, dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 386, in _call_run_once
    self.run_once(*args, **dargs)
  File "/usr/local/autotest/server/site_tests/network_WiFi_IBSS/network_WiFi_IBSS.py", line 41, in run_once
    self.context.assert_connect_wifi(assoc_params)
  File "/usr/local/autotest/server/cros/network/wifi_test_context_manager.py", line 274, in assert_connect_wifi
    connect_name, assoc_result.failure_reason))
TestFail: Expected connection to IBSS_b_1ej96_ch1 to succeed, but it failed with reason: FAIL(Association timed out).



In M61 the test is passing, 

https://wmatrix.googleplex.com/unfiltered?suites=wifi_matfunc&tests=network_WiFi_IBSS&days_back=15&releases=61&hide_missing=True&platforms=squawks,expresso,clapper,glimmer,quawks,enguarde,kip,squawks,gnawty,swanky,winky,candy,orco,sumo,ninja,banjo,heli,falco_li,tricky,samus,auron_paine,auron_yuna,rikku,lulu,gandof