[Mbg891]

Good day,

I am on the code_injector tutorial, and after accidentally messing around with the pip package I think I busted my netfilterqueue.

I’m running the iptables (iptables -I INPUT -j NFQUEUE –queue-num 0 and iptables -I OUTPUT -j NFQUEUE –queue-num 0), that part is fine… but when I go to run my code I am getting:

Traceback (most recent call last):
File “code_injector.py”, line 42, in <module>
queue.bind(0, process_packet)
File “netfilterqueue.pyx”, line 182, in netfilterqueue.NetfilterQueue.bind (netfilterqueue.c:4388)
OSError: Failed to create queue 0.

Any idea why this OS Error is popping up? I do want to think it has something to do with the netfilterqueue.pyx file, which I cannot locate for the life of me to view line 182 and try to dig further… as much as I love this puzzle of figuring things out, I’ve exhausted my attempts.

Thanks!

[Diego Pérez]

Hi!
That happened because once you have run the code it might crashed and queue 0 is unavailable, the solution is to reboot your machine and it will be abalable again.

Hope it helps!
Diego

[Mbg891]

Diego,

That fixed my problem! 🙂

Thank you very much, you are helpful as always.

[Diego Pérez]

You’re welcome!

Greetings!
Diego

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