Yes! That’d be quite neat, actually. There’s a global option for it in the Caddyfile, too.
- default_sni sets a default TLS ServerName for when clients do not use SNI in their ClientHello.
@dclman, instead of adding 172.19.0.4 to your list of site labels, add default_sni 192.168.1.200 to a global options block (open a braced block at the very top of your Caddyfile) and see if that solves this issue.