As per the [release notes](https://github.com/juanfont/headscale/releases/tag/v0.26.0), the route code has been rewritten: https://github.com/juanfont/headscale/pull/2422 It looks like a fairly major change
As per the release notes, the route code has been rewritten: juanfont/headscale#2422
It looks like a fairly major change