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MAC address gets disabled for wireless adapter (TP-linl TL-WN722N) on switching to monitor mode

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When I type the command ifconfig on starting kali linux in virtual box I am not assigned a MAC address. See the terminal trace below.

┌──(root㉿kali)-[/home/kali]└─# ifconfigeth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500        inet 10.0.2.15  netmask 255.255.255.0  broadcast 10.0.2.255        inet6 fd00::7648:cc8d:8ce9:810c  prefixlen 64  scopeid 0x0<global>        inet6 fe80::e9e0:a628:3268:d555  prefixlen 64  scopeid 0x20<link>        ether 08:00:27:ad:25:87  txqueuelen 1000  (Ethernet)        RX packets 5  bytes 2724 (2.6 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 25  bytes 3961 (3.8 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536        inet 127.0.0.1  netmask 255.0.0.0        inet6 ::1  prefixlen 128  scopeid 0x10<host>        loop  txqueuelen 1000  (Local Loopback)        RX packets 8  bytes 480 (480.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 8  bytes 480 (480.0 B)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0wlan0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500        unspec 06-F1-8D-DE-BA-70-00-94-00-00-00-00-00-00-00-00  txqueuelen 1000  (UNSPEC)        RX packets 0  bytes 0 (0.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 0  bytes 0 (0.0 B)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0Then I reboot Kali linux by typing the command reboot. And a MAC address is assigned as shown in the terminal trace below.┌──(root㉿kali)-[/home/kali]└─# ifconfigeth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500        inet 10.0.2.15  netmask 255.255.255.0  broadcast 10.0.2.255        inet6 fe80::e9e0:a628:3268:d555  prefixlen 64  scopeid 0x20<link>        inet6 fd00::7648:cc8d:8ce9:810c  prefixlen 64  scopeid 0x0<global>        ether 08:00:27:ad:25:87  txqueuelen 1000  (Ethernet)        RX packets 6  bytes 3314 (3.2 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 26  bytes 4610 (4.5 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536        inet 127.0.0.1  netmask 255.0.0.0        inet6 ::1  prefixlen 128  scopeid 0x10<host>        loop  txqueuelen 1000  (Local Loopback)        RX packets 8  bytes 480 (480.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 8  bytes 480 (480.0 B)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0wlan0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500        ether f2:d4:bd:ed:67:f3  txqueuelen 1000  (Ethernet)        RX packets 0  bytes 0 (0.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 0  bytes 0 (0.0 B)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0Now I switch on the Monitor mode on the wireless adapter by typing the following commands.> ifconfig wlan0 down> iwconfig wlan0 mode monitor> ifconfig wlan0 upWireless adapter switches to monitor mode as shown below.┌──(root㉿kali)-[/home/kali]└─# ifconfig wlan0 down┌──(root㉿kali)-[/home/kali]└─# iwconfig wlan0 mode monitor┌──(root㉿kali)-[/home/kali]└─# ifconfig wlan0 up          ┌──(root㉿kali)-[/home/kali]└─# iwconfig                   lo        no wireless extensions.eth0      no wireless extensions.wlan0     IEEE 802.11  Mode:Monitor  Frequency:2.412 GHz  Tx-Power=20 dBm             Retry short limit:7   RTS thr=2347 B   Fragment thr:off          Power Management:off

Now if I type the command ifconfig, the MAC address disappear. See trace below.

┌──(root㉿kali)-[/home/kali]└─# ifconfig         eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500        inet 10.0.2.15  netmask 255.255.255.0  broadcast 10.0.2.255        inet6 fe80::e9e0:a628:3268:d555  prefixlen 64  scopeid 0x20<link>        inet6 fd00::7648:cc8d:8ce9:810c  prefixlen 64  scopeid 0x0<global>        ether 08:00:27:ad:25:87  txqueuelen 1000  (Ethernet)        RX packets 6  bytes 3314 (3.2 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 28  bytes 4830 (4.7 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536        inet 127.0.0.1  netmask 255.0.0.0        inet6 ::1  prefixlen 128  scopeid 0x10<host>        loop  txqueuelen 1000  (Local Loopback)        RX packets 8  bytes 480 (480.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 8  bytes 480 (480.0 B)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0wlan0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500        unspec F2-D4-BD-ED-67-F3-00-9F-00-00-00-00-00-00-00-00  txqueuelen 1000  (UNSPEC)        RX packets 0  bytes 0 (0.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 0  bytes 0 (0.0 B)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Please help me out. This problem is inhibiting my cybersecurity studies.


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