This has been done in Raspberry pi 3b in Raspbian Stretch. The goal was to setup a PAN between two raspberry pi. I have followed this tutorial for the command bt-pan server pan0. However I had a few errors including "rfcomm port not initialized" and a "sap server error" then the bluetooth really did not work. What can be the problem here? Also is the process mentioned in the link necessary? Just to establish a bluetooth network using bluetoothctl the bluez package and pulse audio was necessary.

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    It would be best to describe what you did, instead of linking to a tutorial. At least, you should tell which command is throwing the error. – Dmitry Grigoryev May 28 at 11:07

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