This module allows easy creation of ICMPv6 socket in Python tailored to send RPL messages. Non-RPL message (message type != 155) are filtered out and are thus not received by the socket. The RplSocket object contains a send() and receive() methods to send and receives raw ICMP messages (i.e. you have to build the header by yourself).

The source directory contains a make file with a rpm target. This target created a RPM package that will be located in the dist directory that makes deployment of the library easier.

I'm not very sure what is the proper way to install Cython packages because I use exclusively the RPM built for my own needs. My best guess is that the following line should suffice:

python setup.py install

• Cython
• libcap

import RplIcmp
import random
from time import sleep
r = RplIcmp.RplSocket("eth0")
message_header = "\x9b\x01\x00\x00"
while True:
	message = "".join([ chr(random.randrange(255)) for x in range(100) ])
	r.send("fe80::1", message_header + message)
	print "sent one message"
	sleep(0.1)
    ```


### Building a simple RPL ICMP server

```python
import RplIcmp
r = RplIcmp.RplSocket("eth0")
while True:
    (msg, from_node, to, iface) = r.receive()
    print "received a message from %s" % from_node

ICMPv6 filtering does not seem to work if the packet is actually smaller than the ICMPv6 header size. Such kind of message will then be received and must be handled by any application that uses this library.

• Tony Cheneau ([email protected] or [email protected])

This work was supported by the Secure Smart Grid project at the Advanced Networking Technologies Division, NIST.

This software was developed by employees of the National Institute of Standards and Technology (NIST), and others. This software has been contributed to the public domain. Pursuant to title 15 Untied States Code Section 105, works of NIST employees are not subject to copyright protection in the United States and are considered to be in the public domain. As a result, a formal license is not needed to use this software.

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