After some research, I might be switching to Moose Mobile NBN. That'll save me $180 in the first six months vs staying with Aussie Broadband (about whom I have zero complaints, and many excellent things to say about their service), and I can't find anything on Whirlpool that might scare me away except maybe needing to call them to disable CGNAT (which they will do for free, although a static IP costs extra).