[dnsdist] Prevent binding to localhost?

[Seth Mattinen]

I wanted to run dnsdist on top of my existing PowerDNS servers to 
provide DNS over TLS, but it wants to bind to 127.0.0.1:53 which is of 
course already in use. I couldn't find a setting to stop this since it 
seems to be the default. Is there a way to stop it from trying to bind 
to localhost?