What does [::1] mean in ALLOWED_HOSTS in Django?

Question

I was going through the documentation for Django's ALLOWED_HOSTS here

I came across a string ['localhost', '127.0.0.1', '[::1]'] in the ALLOWED_HOSTS.

Everything looks fine except the '[::1]' part.

I can't find a realtime scenario where '[::1]' is used.

Can someone please explain in which use case we will use this [::1]

It is the localhost address for [IPv6](https://en.wikipedia.org/wiki/IPv6). — Klaus D., Jul 09 '19 at 06:52

score 11 · Accepted Answer · answered Jul 09 '19 at 06:53

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[::1] is the loopback address in ipv6, the equivalent would be 127.0.0.1 in ipv4.

answered Jul 09 '19 at 06:53

M. Chris

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Roknix · Answer 2 · 2019-07-09T07:00:26.840

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I know ::1 is normally used for IPv6 as localhost

edited Jul 09 '19 at 07:00

answered Jul 09 '19 at 06:53

Roknix

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score 0 · Answer 3 · answered Jul 09 '19 at 06:55

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That's most important part of settings - change ALLOWED HOSTS when you install your project to server. The settings there must be the same as in server configuration (e.g. nginx/gunicorn), but different for debug stage on local machine.

Advice: put all crucial settings like ALLOWED HOSTS in another one file in terms of security.

But while you're debugging-developing on local machine - you don't really need to change ALLOWED HOSTS.

answered Jul 09 '19 at 06:55

PirrenCode

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That's not what I was asking. What's the purpose of `[;;1]` in `ALLOWED_HOSTS`? – Underoos Jul 09 '19 at 06:56
Localhost for IPv6, as stated above. But still hope my answer also will help you somehow in understanding what is it all about. – PirrenCode Jul 09 '19 at 07:14

What does [::1] mean in ALLOWED_HOSTS in Django?

3 Answers3