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I don't think an average home user even knows what a VLAN is.

This, on the other hand, is Hacker News.

HN has a surprisingly low level of network knowledge compared to sites a generation ago (slashdot etc)

The question was about users in general, not HN users in particular.

Also, just because you know how to do it, doesn't mean you want to tinker with a complex network topology on your home network.