The lab environment was updated and, in the process, various IPs have changed... in a good way. However this also means we ought to walk through every GE and Lab to ensure that the IPs used in them match up with the revised lab environment.

As this will affect the entire course, and there are other bug fixes in flight, we may have to address this via a number of PRs in a number of lessons, taking care not to instigate any rebasing against PRs that have yet to be merged.