WAN Bonjour access working for anyone?

I wonder if this works for people who have better internet than I do, cursed as I am with craptastic CenturyLink DSL's .8 Mbps upstream rate.

I have the Bonjour menu turned on in Safari, and it populates automatically with LAN devices from my subnet that support Bonjour, of course. But I also use iCloud extensively, and so I also see my Indigo server in that list, since iCloud Back To My Mac populates WAN based Bonjour.

But I can never, ever connect to my Indigo web interface over a WAN connection ending in members.btmm.icloud.com. I get a "Failed to open page/can't connect to server" error. Doesn't even work on the LAN! Not from the Bonjour menu, anyway, which is tied to an IPv6 address. indigo.local works fine, when I'm local.

Anyone?