Improve TURN documentation. (#7167)

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Jostein Kjønigsen 2020-03-31 16:50:48 +02:00 committed by GitHub
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Improve README.md by being explicit about public IP recommendation for TURN relaying.

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@ -11,6 +11,13 @@ TURN server.
The following sections describe how to install [coturn](<https://github.com/coturn/coturn>) (which implements the TURN REST API) and integrate it with synapse.
## Requirements
For TURN relaying with `coturn` to work, it must be hosted on a server/endpoint with a public IP.
Hosting TURN behind a NAT (even with appropriate port forwarding) is known to cause issues
and to often not work.
## `coturn` Setup
### Initial installation