airodump-ng Router connected to itself via Wlan?

Hello folks,
i was just starting airodump-ng and searching for my wifi. So i found it and my smartphone connected to my wlan too. But then i recognized that there was someone else connected to another router. Ive looked up which client it was and to which router it was connected. I realized that the mac adress of the client and the router are the same. So the router is connected to itself? Or its just a fault?

Attachment 116

Im using the newest kali version live install on an usb stick.

Code:

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root@kali:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:25:22:e8:ce:a2 
          inet addr:192.168.2.102  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::225:22ff:fee8:cea2/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:216981 errors:0 dropped:0 overruns:0 frame:0
          TX packets:125071 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:313193618 (298.6 MiB)  TX bytes:9517151 (9.0 MiB)

lo        Link encap:Local Loopback 
          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:60 errors:0 dropped:0 overruns:0 frame:0
          TX packets:60 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:3600 (3.5 KiB)  TX bytes:3600 (3.5 KiB)

mon0      Link encap:UNSPEC  HWaddr 00-18-E7-62-C8-2C-3A-30-00-00-00-00-00-00-00-00 
          UP BROADCAST NOTRAILERS RUNNING PROMISC ALLMULTI  MTU:1500  Metric:1
          RX packets:54900 errors:0 dropped:1080 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:14957766 (14.2 MiB)  TX bytes:0 (0.0 B)

root@kali:~#

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This is not a real problem for me maybe its just a software or hardware failure. So dont put all youre energy in me just to help. :)