I don't know if anyone is responding offline to the requests to
Unsubscribe but perhaps it is worth pointing out to those and others
that How to Unsubscribe is part of the e-mail header, thus
List-Id: IETF-Discussion <ietf.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ietf>,
<mailto:ietf-request(_at_)ietf(_dot_)org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ietf/>
List-Post: <mailto:ietf(_at_)ietf(_dot_)org>
List-Help: <mailto:ietf-request(_at_)ietf(_dot_)org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ietf>,
<mailto:ietf-request(_at_)ietf(_dot_)org?subject=subscribe>
Tom Petch