Had a response from Billion support today, with a link to a pre-release version of the firmware (1.02e.RC1) which fixes the IP translation issue (and has a few other features to boot) – so far, I’m pretty impressed with the company. Assuming it’s all pretty stable now, I’ll put up a more thorough review in a week or so. Comments Off on Firmware fix!

I’ve now set up my new Billion BiPac 7800N router, and it’s sitting there merrily sending packets to and fro. Only snag is that the port-forwarding doesn’t work properly – all packets appear to originate from the 7800N’s internal IP address, rather than the actual origin. I’ve logged a support call with Billion UK so we’ll see what they say.