[Firefishy]

https://protectli.com/ Good quality devices. Real serial consoles to allow recovery when you make a networking configuration mistake ;-)

[LinuxBender]

Same here. Alpine Linux on top of that + Unbound DNS, dnsmasq for DHCP, netfilter, chronyd for time. I've never been able to make them break a sweat.

[nicolas314]

Curious: how did you set up firewall (nftables?), IPv6 delegation both ULA and public prefix? Happy to read if you have a write-up somewhere.