Failed build:
https://uberchromegw.corp.google.com/i/chromeos/builders/whirlwind-paladin/builds/10334

jetstream_NetworkInterfaces

01/04 16:03:50.880 DEBUG|          autotest:1310| AUTOTEST_STATUS::		FAIL	jetstream_NetworkInterfaces	jetstream_NetworkInterfaces	timestamp=1515031884	localtime=Jan 04 02:11:24	Timed out waiting for AP to appear operational
01/04 16:03:50.880 INFO |        server_job:0218| 		FAIL	jetstream_NetworkInterfaces	jetstream_NetworkInterfaces	timestamp=1515031884	localtime=Jan 03 18:11:24	Timed out waiting for AP to appear operational
01/04 16:03:50.881 INFO |        server_job:1401| Parsing lines in fast mode
01/04 16:03:50.881 ERROR|   logging_manager:0626| tko parser: update RUNNING reason: Timed out waiting for AP to appear operational



From DUT log:

01/04 02:10:21.552 DEBUG|             utils:0212| Running 'ip addr show wlan-2400mhz 2> /dev/null'
01/04 02:10:21.590 DEBUG|             utils:0280| [stdout] 11: wlan-2400mhz: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
01/04 02:10:21.593 DEBUG|             utils:0280| [stdout]     link/ether 60:e3:27:69:2a:47 brd ff:ff:ff:ff:ff:ff
01/04 02:10:21.597 DEBUG|             utils:0212| Running 'ip addr show wlan-5000mhz 2> /dev/null'
01/04 02:10:21.633 DEBUG|             utils:0280| [stdout] 12: wlan-5000mhz: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
01/04 02:10:21.636 DEBUG|             utils:0280| [stdout]     link/ether 60:e3:27:69:52:ee brd ff:ff:ff:ff:ff:ff



both wlan ip addr are DOWN, they should be UP in the passed cases.
Not triaged yet, it could be failed by commit or test/infra flake.