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This question already has an answer here:

I am following a networking course from udacity.

In one of the tutorials, the professor says that loopback address is almost always 127.0.0.1

So, it means it can be other than 127.0.0.1.

Can it be changed ? If yes, how ?

And also, at one moment, a machine can have only 1 loopback address, is it right ?

marked as duplicate by mikewhatever, karel, Community Sep 5 '17 at 5:32

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • What does that have to with Ubuntu? – user692175 Sep 4 '17 at 19:58
  • I just asked as I use ubuntu machine, and people answer here. I can flag it to migrate it if its inappropriate here. – luv.preet Sep 4 '17 at 20:04