Love headscale, we just took it to production and it’s been great
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We considered it as well but there was a feature missing that meant we couldn’t use it for one of our main requirements. Had that not been the case, we’d have rolled it out.
Sorry I can't provide any more details but I really don't remember the specifics. We were in touch with Tailscale engineers and they offered some workarounds that we had already worked out but that wouldn't help us achieve what we were after.