mitm6 doesn't work on VPN tunnel interface. "mitm6 -i tun0 -d <domain name>"

[ssc1982]

   valid_lft forever preferred_lft forever

3: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 100
link/none
inet 10.10.15.169/23 brd 10.10.15.255 scope global tun0
valid_lft forever preferred_lft forever
inet6 dead:beef:2::11a7/64 scope global
valid_lft forever preferred_lft forever
inet6 fe80::e4e0:7a25:ea5d:b6ee/64 scope link stable-privacy
valid_lft forever preferred_lft forever

root@kali:/opt/mitm6# mitm6 -i tun0
Traceback (most recent call last):
File "/usr/local/bin/mitm6", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.8/dist-packages/mitm6/mitm6.py", line 340, in main
config = Config(args)
File "/usr/local/lib/python3.8/dist-packages/mitm6/mitm6.py", line 57, in init
self.macaddr = netifaces.ifaddresses(self.default_if)[netifaces.AF_LINK][0]['addr']
KeyError: 17

[korang]

SAme issue with CSCOTUN0 cisco anyconnect vpn connection.

[InitRoot]

This is due to VPN on layer2 usually doesn't receive MAC addresses.
You can try modifying the code as below for line 57:

  if args.mac is None:
            self.macaddr = '00:00:00:00:00:00'
        else:
            self.macaddr = args.mac

[tobias-rauch]

This is due to VPN on layer2 usually doesn't receive MAC addresses. You can try modifying the code as below for line 57:

  if args.mac is None:
            self.macaddr = '00:00:00:00:00:00'
        else:
            self.macaddr = args.mac

thanks mate, works perfectly

[KreativeNerd]

After following what was written here, the error still persist for me. This is the full error text:
┌──(kali㉿Smart-Hacker)-[~]
└─$ sudo mitm6 -i tun0 -d secdojo.local
[sudo] password for kali:
/usr/local/lib/python3.11/dist-packages/scapy/layers/ipsec.py:471: CryptographyDeprecationWarning: Blowfish has been deprecated and will be removed in a future release
cipher=algorithms.Blowfish,
/usr/local/lib/python3.11/dist-packages/scapy/layers/ipsec.py:485: CryptographyDeprecationWarning: CAST5 has been deprecated and will be removed in a future release
cipher=algorithms.CAST5,
Traceback (most recent call last):
File "/usr/local/bin/mitm6", line 33, in
sys.exit(load_entry_point('mitm6==0.3.0', 'console_scripts', 'mitm6')())
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/dist-packages/mitm6-0.3.0-py3.11.egg/mitm6/mitm6.py", line 369, in main
File "/usr/local/lib/python3.11/dist-packages/mitm6-0.3.0-py3.11.egg/mitm6/mitm6.py", line 57, in init
KeyError: 17

[dovelus]

Try to run the python directly instead for example for me was sudo python3 /opt/mitm6/mitm6/mitm6.py -d <domian> -i tun0