Error for wireless request set mode 8b06 set failed on device eth0 operation not supported

you don’t need to use airmon-ng at all. you can simply:

sudo ifconfig wlan0 down

than go on with

sudo iwconfig wlan0 mode monitor

and finally

sudo ifconfig wlan0 up

thats basically what airmon-ng does.

answered Jul 15, 2015 at 19:41

You need to read more about how to use aircrack-ng.

The command you executed, sudo airodump-ng mon0, tells your computer to start capturing packets on the interface called mon0, but you don’t have that interface yet, that’s why it tells you No such device.

The general steps in using aircrack-ng is:

1. sudo airmon-ng start wlan0

   • This puts your wireless interface into monitor mode, which is the mode where you can capture all packets, even if they weren’t directed to your computer. What the command actually does is it creates another interface called mon0, which you can see when you do iwconfig. This is the command that you probably didn’t execute. If you did run it but you can’t see mon0 afterwards, let us know what was the command’s output.

2. sudo airodump-ng <options> mon0

   • This starts capturing packets.

3. sudo aireplay-ng <options> mon0

   • You use this to attempt to increase the number of IVs being captured so you can easily crack the password.

4. sudo aircrack-ng <options> <file>

   • This is the application that then cracks the capture you took to extract the password.

answered Nov 13, 2014 at 4:22

The problem is with the name of the interface. Use the following commands:

Start your wireless interface in monitoring mode

airmon-ng   

Kill all the interfering processes

airmon-ng check kill     

Instead of airodump-ng mon0, type this airodump-ng wlan0mon

Please let me know if this works for you.

SidahmedSidahmed

1,0462 gold badges14 silver badges27 bronze badges

Code: Select all

:~$ inxi -Fxxxrz
System:
  Kernel: 5.4.0-77-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 
  Desktop: Cinnamon 4.8.6 info: plank wm: muffin 4.8.1 dm: LightDM 1.30.0 
  Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal 
Machine:
  Type: Portable System: Dell product: Vostro 2520 v: N/A serial: <filter> 
  Chassis: type: 8 serial: <filter> 
  Mobo: Dell model: 0V1NDP v: A11 serial: <filter> BIOS: Dell v: A11 
  date: 02/24/2014 
CPU:
  Topology: Dual Core model: Intel Core i3-2328M bits: 64 type: MT MCP 
  arch: Sandy Bridge rev: 7 L2 cache: 3072 KiB 
  flags: avx lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 17560 
  Speed: 898 MHz min/max: 800/2200 MHz Core speeds (MHz): 1: 898 2: 898 
  3: 898 4: 898 
Graphics:
  Device-1: Intel 2nd Generation Core Processor Family Integrated Graphics 
  vendor: Dell driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:0116 
  Display: x11 server: X.Org 1.20.9 driver: modesetting unloaded: fbdev,vesa 
  resolution: 1366x768~60Hz 
  OpenGL: renderer: Mesa DRI Intel HD Graphics 3000 (SNB GT2) 
  v: 3.3 Mesa 20.2.6 compat-v: 3.0 direct render: Yes 
Audio:
  Device-1: Intel 7 Series/C216 Family High Definition Audio vendor: Dell 
  driver: snd_hda_intel v: kernel bus ID: 00:1b.0 chip ID: 8086:1e20 
  Sound Server: ALSA v: k5.4.0-77-generic 
Network:
  Device-1: Broadcom and subsidiaries BCM43142 802.11b/g/n 
  vendor: Dell Wireless 1704 802.11n + BT 4.0 driver: wl v: kernel 
  port: f040 bus ID: 07:00.0 chip ID: 14e4:4365 
  IF: wlan0 state: dormant mac: <filter> 
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Dell driver: r8169 v: kernel port: e000 bus ID: 09:00.0 
  chip ID: 10ec:8168 
  IF: eth0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Drives:
  Local Storage: total: 465.76 GiB used: 257.72 GiB (55.3%) 
  ID-1: /dev/sda vendor: Seagate model: ST500LM012 HN-M500MBB 
  size: 465.76 GiB speed: 3.0 Gb/s rotation: 5400 rpm serial: <filter> 
  rev: 0003 scheme: MBR 
Partition:
  ID-1: / size: 456.95 GiB used: 257.72 GiB (56.4%) fs: ext4 dev: /dev/sda5 
Sensors:
  System Temperatures: cpu: 76.0 C mobo: 60.0 C 
  Fan Speeds (RPM): cpu: 4769 
Repos:
  Active apt repos in: /etc/apt/sources.list.d/anydesk-stable.list 
  1: deb http://deb.anydesk.com/ all main
  Active apt repos in: /etc/apt/sources.list.d/atareao-atareao-focal.list 
  1: deb http://ppa.launchpad.net/atareao/atareao/ubuntu focal main
  Active apt repos in: /etc/apt/sources.list.d/brave-browser-release.list 
  1: deb [signed-by=/usr/share/keyrings/brave-browser-archive-keyring.gpg arch=amd64] https://brave-browser-apt-release.s3.brave.com/ stable main
  Active apt repos in: /etc/apt/sources.list.d/chrome-remote-desktop.list 
  1: deb [arch=amd64] http://dl.google.com/linux/chrome-remote-desktop/deb/ stable main
  Active apt repos in: /etc/apt/sources.list.d/deadsnakes-ppa-focal.list 
  1: deb http://ppa.launchpad.net/deadsnakes/ppa/ubuntu focal main
  Active apt repos in: /etc/apt/sources.list.d/gezakovacs-ppa-focal.list 
  1: deb http://ppa.launchpad.net/gezakovacs/ppa/ubuntu focal main
  Active apt repos in: /etc/apt/sources.list.d/google-chrome.list 
  1: deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
  No active apt repos in: /etc/apt/sources.list.d/metasploit-framework.list 
  Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
  1: deb http://packages.linuxmint.com ulyssa main upstream import backport
  2: deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse
  3: deb http://archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
  4: deb http://archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
  5: deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
  6: deb http://archive.canonical.com/ubuntu/ focal partner
  Active apt repos in: /etc/apt/sources.list.d/opera-stable.list 
  1: deb https://deb.opera.com/opera-stable/ stable non-free #Opera Browser (final releases)
  Active apt repos in: /etc/apt/sources.list.d/protonvpn-stable.list 
  1: deb [signed-by=/usr/share/keyrings/protonvpn-stable-archive-keyring.gpg] https://repo.protonvpn.com/debian stable main
  Active apt repos in: /etc/apt/sources.list.d/spotify.list 
  1: deb http://repository.spotify.com stable non-free
Info:
  Processes: 261 Uptime: 19m Memory: 5.68 GiB used: 2.45 GiB (43.1%) 
  Init: systemd v: 247 runlevel: 5 Compilers: gcc: 9.3.0 alt: 9 Shell: bash 
  v: 5.1.4 running in: gnome-terminal inxi: 3.0.38 

Code: Select all

rithik@rithik:~$ sudo ip link set wlan0 down
rithik@rithik:~$ sudo iw wlan0 set monitor control
command failed: Operation not supported (-95)

Code: Select all

rithik@rithik:~$ sudo airmon-ng
[sudo] password for rithik:     

PHY	Interface	Driver		Chipset

phy0	wlan0		wl		Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n (rev 01)

rithik@rithik:~$ sudo airmon-ng check kill

Killing these processes:

    PID Name
   1002 wpa_supplicant
   8204 avahi-daemon
   8208 avahi-daemon

rithik@rithik:~$ sudo airmon-ng start wlan0

Found 2 processes that could cause trouble.
Kill them using 'airmon-ng check kill' before putting
the card in monitor mode, they will interfere by changing channels
and sometimes putting the interface back in managed mode

    PID Name
   8221 avahi-daemon
   8222 avahi-daemon

PHY	Interface	Driver		Chipset

phy0	wlan0		wl		Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n (rev 01)

		(experimental wl monitor mode vif enabled for [phy0]wlan0 on [phy0]prism0)

rithik@rithik:~$ sudo airmon-ng check kill

Killing these processes:

    PID Name
   8437 avahi-daemon
   8444 avahi-daemon

rithik@rithik:~$ sudo airmon-ng start wlan0

Found 2 processes that could cause trouble.
Kill them using 'airmon-ng check kill' before putting
the card in monitor mode, they will interfere by changing channels
and sometimes putting the interface back in managed mode

    PID Name
   8458 avahi-daemon
   8459 avahi-daemon

PHY	Interface	Driver		Chipset

phy0	wlan0		wl		Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n (rev 01)

		(experimental wl monitor mode vif already enabled for [phy0]wlan0 on [phy0]prism0)

rithik@rithik:~$ sudo kill 8458
rithik@rithik:~$ sudo kill 8459
kill: (8459): No such process
rithik@rithik:~$ sudo airmon-ng check kill

Killing these processes:

    PID Name
   8653 avahi-daemon
   8660 avahi-daemon

rithik@rithik:~$ sudo airmon-ng start wlan0

Found 2 processes that could cause trouble.
Kill them using 'airmon-ng check kill' before putting
the card in monitor mode, they will interfere by changing channels
and sometimes putting the interface back in managed mode

    PID Name
   8673 avahi-daemon
   8674 avahi-daemon

PHY	Interface	Driver		Chipset

phy0	wlan0		wl		Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n (rev 01)

		(experimental wl monitor mode vif already enabled for [phy0]wlan0 on [phy0]prism0)

rithik@rithik:~$ sudo iwconfig
eth0      no wireless extensions.

prism0    no wireless extensions.

lo        no wireless extensions.

wlan0     IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=200 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          
rithik@rithik:~$ sudo systemctl start NetworkManager
rithik@rithik:~$ 

Code: Select all

rithik@rithik:~$ sudo ifconfig wlan0 down
[sudo] password for rithik:     
rithik@rithik:~$ sudo iwconfig wlan0 mode monitor
Error for wireless request "Set Mode" (8B06) :
    SET failed on device wlan0 ; Operation not supported

Code: Select all

rithik@rithik:~$ sudo systemctl stop NetworkManager
[sudo] password for rithik:     
rithik@rithik:~$ sudo iwconfig wlan0 mode monitor
Error for wireless request "Set Mode" (8B06) :
    SET failed on device wlan0 ; Operation not supported.
rithik@rithik:~$ sudo iwconfig wlan0 mode monitor
Error for wireless request "Set Mode" (8B06) :
    SET failed on device wlan0 ; Operation not supported

Code: Select all

sudo apt-get install b43-fwcutter firmware-b43-installer
[sudo] password for root:     
Reading package lists... Done
Building dependency tree       
Reading state information... Done
b43-fwcutter is already the newest version (1:019-4).
firmware-b43-installer is already the newest version (1:019-4).
0 upgraded, 0 newly installed, 0 to remove and 18 not upgraded