Mission Tech Lab 03: The Layer 2 Grand Finale

Extract this package inside WSL2 Ubuntu, then run:
  chmod +x mission-layer2-grand-finale.sh
  sudo ./mission-layer2-grand-finale.sh doctor

The HTML guide is the primary workshop manual. The script creates only mls1-prefixed Linux namespaces, veth links and bridges. It does not touch physical interfaces, the WSL external link, host routes or the host firewall. Review the guide before running stateful demonstrations.