Notes

Write-ups from the work

Things that broke, what the fix actually was, and what I would do differently. No client is named in any of these.

1 October 2026 Running four client VPNs at once when their networks collide
Two clients, both on 10.20.0.0/16. One laptop, one routing table. Why reconnecting and route metrics do not solve it, how a network namespace per client does, and the SSH host key problem that comes with it.