From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Alan Martinovic <alan.martinovic@senic.com>
Date: Tue, 5 Dec 2017 14:39:37 +0100
Message-ID: <CAOT_U5ZE_an7h2Co5Rg27+eY2uyfEG6PBHsL1vnsNToEXPadYQ@mail.gmail.com>
Subject: Change controller role with non deprecated commands
To: linux-bluetooth@vger.kernel.org
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Hi,
what is the proper way to change the role of the controller after the
deprecation of the hcitool?

An equivalent of this:

hcitool sr <bdaddr> <role>

Ref.
https://manpages.debian.org/testing/bluez/hcitool.1.en.html