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this post was submitted on 05 Feb 2024
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I had a roommate once who need an IP for something, and because it was a device I had been working with recently, I just rattled off "192.168.0.7" or something.
He was in awe of the fact that I could remember it. However, it's not that difficult when you know the private prefix you use is always "192.168." and that gets burned into your brain. The next octet is often zero (maybe 1 if your home network gets crazy), and you really only need to remember the final octet for the device.
Point is, fe80::x will go the same way. You'll remember fe80, and the rest is however you handled your own network scheme.
(I can never remember the class B private address space, though. Only classes A and C. Never needed to bother with the class B space when you can subnet 10.x.x.x so much.)
No. It's 23 or 42.