Correct me if I'm wrong - I haven't tried it - but it looks like you should be able to run OpenBSD on ARM https://www.openbsd.org/armv7.html https://www.openbsd

Correct me if I'm wrong - I haven't tried it - but it looks like you should be able to run OpenBSD on ARM https://www.openbsd.org/armv7.html https://www.openbsd.org/armv7.html I'll check what the energy consumption on my router is. I'm using an AMD chip which I had lying around. You're probably right that it uses a bit more power than necessary. I was thinking about getting something like this: https://www.amazon.com/Firewall-Micro-Appliance-Gigabit-Barebone/dp/B01GIVQI3M/ref=sr_1_5?ie=UTF8&qid=1518825397&sr=8-5&keywords=pfsense+router https://www.amazon.com/Firewall-Micro-Appliance-Gigabit-Bare... which uses 10W. It should be easy to install *BSD on something similar.