On: Special-use domain 'home.arpa.' (2018)

[mrbluecoat]

And how is .home.arpa better than RFC-2606 .test, .example, .invalid, or .localhost ?

[yjftsjthsd-h → mrbluecoat]

Because devices on my home network aren't examples, aren't invalid, aren't (all) localhost, and aren't (necessarily) for testing.

[lukevp → yjftsjthsd-h]

What about devices on my work network? Is work.arpa a thing? Or are the labels arbitrary?

[INTPenis → lukevp]

At work best practice is to use a real domain you have control of both internally and externally.

[NewJazz → lukevp]

work.arpa is not a thing, but you could use .internal for corporate stuff.