IPv6 ULA in a Route Information Option (RIO) or a Prefix Information Option (PIO) for Windows in an IPv6 Router Advertisement (RA)

With this python code, the system will listen for RIOs & PIOs in IPv6 RAs, and scan the interface for statically assigned addresses:

1. will add a "known-local" ULA prefix if a prefix does not exist in the Windows prefixpolicy table - which means it must be in the fd00::/7 prefix boundary
2. will remove if prefix is no longer in an RIO or PIO (static address can't be removed currently per issue #2)

Follows the updated IETF 6Man draft: https://datatracker.ietf.org/doc/draft-ietf-6man-rfc6724-update/

This is for Windows, must be using Windows 10 +

• Must have wirehsark w/ NDCap installed - The "manuf" file must be added manually. Recent Wireshark downloads no longer install this file. It can be found at https://www.wireshark.org/download/automated/data/manuf and it needs to be stored in C:\Program Files\Wireshark (thanks Brian!)
• Must have a router that sends the RIO or a PIO in an IPv6 RA
• Must have Python 3x installed
• Must have scapy 2.5.0 installed - install PIP first

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py

• then install scapy:

pip install scapy

• Open command line as an Admin - MUST HAVE ADMIN PRIV - cmd.exe
• start:

python ra_rio.py

add and remove PIOs and RIOs in your network and watch the fun!

• If there is no output after starting it, then your RAs don't have RIOs or PIOs
• can add manually assigned or DHCPv6 assigned address (if no RA exists) thanks to code provided by Brian Carpenter
• once an RIO or PIO is seen (and it falls in the fd00::/7 prefix), it will be added to the Windows prefixpolicy table. To view that table run this command from a Windows command line:

netsh interface ipv6 show prefixpolicies

• fix the static address removal function per issue #2