proxyaddress cannot be blank

[ikb42]

if left blank then the server exits (with given example)

at least this happens on my machine, which might have some disconnected network interfaces etc.

[gildean]

I will test this out asap. Thanks for the notice.

[gildean]

This is actually intended behavior, the proxy listens all interfaces by default.
You'll need to validate your options before starting the server if you want to override it.