[Nexus 6 Q&A, Help & Troubleshooting] 5.1:
Hi... Bellow is the complete output or "if config -a"

Using my N6P to post, but just tried the N6 and the output looks the same. Note that WiFi was off when I typed the command both on my N6P and N6... If wlan0 doesn't show up, there must be a communication problem between the chip and the board, meaning it's possibly broken?! Maybe someone with better knowledge will post on that matter because that's the only explanation I've found... I could be wrong and it's just a software/firmware. I hope so...

angler:/ $ ifconfig -a

rmnet_ipa0 Link encap:UNSPEC

UP RUNNING MTU:2000 Metric:1

RX packets:23043 errors:0 dropped:0 overruns:0 frame:0

TX packets:21193 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:5999375656 TX bytes:2366992

r_rmnet_data7 Link encap:UNSPEC

[NO FLAGS] MTU:3000 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

r_rmnet_data4 Link encap:UNSPEC

[NO FLAGS] MTU:3000 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

rmnet_data1 Link encap:UNSPEC

[NO FLAGS] MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

rmnet_data3 Link encap:UNSPEC

[NO FLAGS] MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

wlan0 Link encap:UNSPEC

BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:721304 errors:0 dropped:0 overruns:0 frame:0

TX packets:402547 errors:0 dropped:22 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:938263476 TX bytes:39688587

rmnet_data5 Link encap:UNSPEC

[NO FLAGS] MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

r_rmnet_data1 Link encap:UNSPEC

[NO FLAGS] MTU:3000 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

rmnet_data7 Link encap:UNSPEC

[NO FLAGS] MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

dummy0 Link encap:UNSPEC

inet6 addr: fe80::2cc3:f1ff:fe7c:46d5/64 Scope: Link

UP BROADCAST RUNNING NOARP MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:3 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:0 TX bytes:210

r_rmnet_data6 Link encap:UNSPEC

[NO FLAGS] MTU:3000 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

r_rmnet_data3 Link encap:UNSPEC

[NO FLAGS] MTU:3000 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

r_rmnet_data8 Link encap:UNSPEC

[NO FLAGS] MTU:3000 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

rmnet_data0 Link encap:UNSPEC

[NO FLAGS] MTU:1430 Metric:1

RX packets:23043 errors:0 dropped:0 overruns:0 frame:0

TX packets:20971 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:20084067 TX bytes:2351704

r_rmnet_data0 Link encap:UNSPEC

inet6 addr: fe80::ed35:1990:8685:d2b8/64 Scope: Link

UP RUNNING MTU:3000 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:222 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:15288

rmnet_data2 Link encap:UNSPEC

[NO FLAGS] MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

rmnet_data4 Link encap:UNSPEC

[NO FLAGS] MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

sit0 Link encap:UNSPEC

NOARP MTU:1480 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:0 TX bytes:0

lo Link encap:UNSPEC

inet addr:127.0.0.1 Mask:255.0.0.0

inet6 addr: ::1/128 Scope: Host

UP LOOPBACK RUNNING MTU:65536 Metric:1

RX packets:2156 errors:0 dropped:0 overruns:0 frame:0

TX packets:2156 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:163828 TX bytes:163828

r_rmnet_data5 Link encap:UNSPEC

[NO FLAGS] MTU:3000 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

rmnet_data6 Link encap:UNSPEC

[NO FLAGS] MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

r_rmnet_data2 Link encap:UNSPEC

[NO FLAGS] MTU:3000 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 TX bytes:0

angler:/ $