# Private networking not working

**URL:** <https://community.fly.io/t/private-networking-not-working/993>\
**Category:** Questions / Help\
**Created:** [March 24, 2021, 9:06am UTC](https://community.fly.io/t/private-networking-not-working/993 "2021-03-24T09:06:13Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![kurt](https://sea1.discourse-cdn.com/fly1/user_avatar/community.fly.io/kurt/32/43757_2.png) [@kurt](https://community.fly.io/u/kurt)\
**Post date:** [March 24, 2021, 3:20pm UTC](https://community.fly.io/t/private-networking-not-working/993/4 "2021-03-24T15:20:10Z")

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> [@pims](#):
>
> I believe that your app will need to bind to 0.0.0.0 _and_ fly-local-6pn if you want the same port to be publicly _and_ privately accessible.

This is correct! Depending on the app stack, you can either bind to something like `::` to listen on all IPv4 and IPv6 addresses, or bind specifically to the 6pn address.

Binding to either `_local_ip.internal` or `fly-local-6pn` will also work for _some_ runtimes. It’s wildly inconsistent. You can test the latter by adding an entry to your local`/etc/hosts` and running your app locally.

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_[View the full topic](https://community.fly.io/t/private-networking-not-working/993)._