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# Raw socket programming challenge
How to send a pure ethernet packet?
Let us know in your favorite programming language!
## What are we expecting?
A layer 2 ethernet frame is constructed in the following way.
```
[Destination MAC: 6 bytes][Source MAC: 6 bytes][Protocol: 2 bytes][Message: ZeusWPI is de max!]
```
For example
```python
\xff\xff\xff\xff\xff\xff \x12\xab\x34\xcd\x56 \x60\x00 \x5a\x45\x75\x53...
Broadcast Dest MAC | Source MAC | Protocol | Your binary message
```
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Send that frame with the protocol `\x60\x00` and the message `ZeusWPI is de max!` over the same network interface that the listener is listening on and it will confirm that you completed the challenge!
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You can then put your code in a folder with the name of the programming language providing instructions on how to run it.
## How to
We are providing some code that will listen to any packets received. It will give you a confirmation if you completed the challenge.
The only python package requirement is `netifaces` .
Install with the command `pip install --user netifaces`
Create a file named `.env` with the following line `INTERFACE=YOUR_NETWORK_INTERFACE`
* Run the listener with `sudo make listener`
* We also provide an example client in python. Run it with `sudo make example-sender`
