As a long time ZeroTier user I want to point out that they have some interesting DNS solutions as well.[1]
(Personally, have not felt the need to change something that has a great free tier, self hosting controllers, etc, and has been working reliably for years... Tailscale looks cool though)
[1]https://www.zerotier.com/2022/04/11/the-zerotier-dns-story/