Logs @
https://wmatrix.googleplex.com/failures/wifi_matfunc?tests=network_WiFi_TDLSPing&days_back=15&releases=51&platforms=lars,terra,celes,reks,cyan,sentry&hide_missing=True

https://wmatrix.googleplex.com/failures/wifi_matfunc?tests=network_WiFi_TDLSPing&days_back=15&releases=50&platforms=lars,terra,celes,reks,cyan,sentry&hide_missing=True

Sample failure,


03/19 03:38:20.405 DEBUG|          ssh_host:0153| Running (ssh) 'rm -rf "/tmp/autoserv-MTvsiY"'
03/19 03:38:20.638 INFO |        server_job:0128| 	FAIL	network_WiFi_TDLSPing	network_WiFi_TDLSPing	timestamp=1458383900	localtime=Mar 19 03:38:20	Unhandled AutoservRunError: command execution error
  * Command: 
      /usr/bin/ssh -a -x     -o StrictHostKeyChecking=no -o
      UserKnownHostsFile=/dev/null -o BatchMode=yes -o ConnectTimeout=30 -o
      ServerAliveInterval=900 -o ServerAliveCountMax=3 -o ConnectionAttempts=4
      -o Protocol=2 -l root -p 22 chromeos1-row3-rack8-host1-router "export
      LIBC_FATAL_STDERR_=1; /usr/local/bin/ip link set managed1 up"
  Exit status: 2
  Duration: 0.235546827316
  
  stderr:
  RTNETLINK answers: Device or resource busy
  Traceback (most recent call last):
    File "/usr/local/autotest/client/common_lib/test.py", line 741, in _call_test_function
      return func(*args, **dargs)
    File "/usr/local/autotest/client/common_lib/test.py", line 398, in execute
      dargs)
    File "/usr/local/autotest/client/common_lib/test.py", line 284, in _call_run_once_with_retry
      postprocess_profiled_run, args, dargs)
    File "/usr/local/autotest/client/common_lib/test.py", line 313, in _call_run_once
      self.run_once(*args, **dargs)
    File "/usr/local/autotest/server/site_tests/network_WiFi_TDLSPing/network_WiFi_TDLSPing.py", line 119, in run_once
      self.context.router.add_connected_peer()
    File "/usr/local/autotest/server/site_linux_router.py", line 1001, in add_connected_peer
      ssid, frequency, self.local_peer_ip_address(instance))
    File "/usr/local/autotest/server/site_linux_router.py", line 1046, in configure_managed_station
      self.router.run('%s link set %s up' % (self.cmd_ip, interface))
    File "/usr/local/autotest/server/hosts/ssh_host.py", line 162, in run
      options, stdin, args, ignore_timeout)
    File "/usr/local/autotest/server/hosts/ssh_host.py", line 130, in _run
      raise error.AutoservRunError("command execution error", result)
  AutoservRunError: command execution error
  * Command: 
      /usr/bin/ssh -a -x     -o StrictHostKeyChecking=no -o
      UserKnownHostsFile=/dev/null -o BatchMode=yes -o ConnectTimeout=30 -o
      ServerAliveInterval=900 -o ServerAliveCountMax=3 -o ConnectionAttempts=4
      -o Protocol=2 -l root -p 22 chromeos1-row3-rack8-host1-router "export
      LIBC_FATAL_STDERR_=1; /usr/local/bin/ip link set managed1 up"
  Exit status: 2
  Duration: 0.235546827316
  
  stderr:
  RTNETLINK answers: Device or resource busy
  
03/19 03:38:20.640 INFO |        server_job:0128| END FAIL	network_WiFi_TDLSPing	network_WiFi_TDLSPing	timestamp=1458383900	localtime=Mar 19 03:38:20