(Aside: I wish ssh had a feature like SNI, so that you could build an 
ssh proxy that forwards incoming connections to the right host.  I have 
done this before using an inbound SOCKS proxy, but it's messy to use)

What insane things people invent only not to use IPv6 :)

Quite the opposite: I want it so that I can reach my IPv6-addressable devices when I'm on an IPv4-only network.  Which means, almost everywhere :-)