Still testing my DNS service and UDP query responses have been 100% for the past week which is great.
However, I’ve just tested DNS TCP and unfortunately it no longer seems to work. E.g.,:
$ dig @18.104.22.168 wombatsoftware.com +tcp ;; communications error to 22.214.171.124#53: connection reset
My DNS server is running both 53/udp and 53/tcp and they’re both configured in my
fly.toml. App name is
Weirdly the 53/tcp port is configured as the health check and all instances are showing healthy…