I wanted to identify my wireless network interface name to check my wireless network card is installed properly or not . But i am getting something different.

I'm used to seeing this:

$ /sbin/iwconfig

wlan0     IEEE 802.11  Mode:Monitor  Frequency:2.437 GHz  Tx-Power=20 dBm

but I am now seeing this:

$ /sbin/iwconfig

eth0      no wireless extensions.

eth1      IEEE 802.11abg  ESSID:"REPALLE"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: C0:A0:BB:17:12:6E   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:on

lo        no wireless extensions.

Why is my wireless card showing up as an eth interface instead of a wifi or wlan interface, and how can I make it appear as I expect?

  • That's just a name... Does your wifi card work? Aug 17, 2014 at 12:49

1 Answer 1


The Broadcom wireless driver provided by bcmwl-kernel-source, as well as some older Intel drivers, names the wireless interface ethxy, where xy is the next available eth interface name. The driver does provide a parameter you may change. I have no Broadcom card so I've never tried this, so the process may or may not work as expected. In a terminal:

sudo -i
echo "options wl intf_name=wlan0"  > /etc/modprobe.d/bcmwl.conf
rm /etc/udev/rules.d/70-persistent-net.rules

Reboot and your interface is probably wlan0.

  • Thanks chili555 my interface name is changed to wlan0 but still i am not getting the desired output :- wlan0 IEEE 802.11 Mode:Monitor Frequency:2.437 GHz Tx-Power=20 dBm
    – Trushar
    Aug 18, 2014 at 20:04
  • Is Network Manager set to Infrastructure mode? Or what? Does it help to do: sudo iwconfig wlan0 mode managed
    – chili555
    Aug 18, 2014 at 20:14
  • how can i set Network Manager set to Infrastructure mode? @chili555
    – Trushar
    Aug 18, 2014 at 20:23
  • Right-click the NM icon, select Edit Connections > Wireless > Edit > and change Mode to Infrastructure. Save and close.
    – chili555
    Aug 18, 2014 at 20:25
  • ya its in infrastucture mode.
    – Trushar
    Aug 18, 2014 at 20:37

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