From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lucy.dinwoodie.org (77.116.2.81.in-addr.arpa [81.2.116.77]) by sourceware.org (Postfix) with ESMTPS id A6E10385840C for ; Mon, 17 Jan 2022 20:36:53 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org A6E10385840C Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=dinwoodie.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=dinwoodie.org Received: from adam by lucy.dinwoodie.org with local (Exim 4.94.2) (envelope-from ) id 1n9YkG-00039J-18 for cygwin@cygwin.com; Mon, 17 Jan 2022 20:36:52 +0000 Date: Mon, 17 Jan 2022 20:36:52 +0000 From: Adam Dinwoodie To: cygwin@cygwin.com Subject: Re: [cygwin] openssh connection sharing fails: "mux_client_request_session: read from master failed: Connection reset by peer" Message-ID: <20220117203652.mqlo74ea5pyn2up6@lucy.dinwoodie.org> References: <20220117162931.jexrpvsyawnsdi7y@lucy.dinwoodie.org> <032801d80bc2$8c6f3950$a54dabf0$@pdinc.us> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <032801d80bc2$8c6f3950$a54dabf0$@pdinc.us> X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, PDS_RDNS_DYNAMIC_FP, RDNS_DYNAMIC, SPF_HELO_PASS, SPF_PASS autolearn=no autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 Jan 2022 20:36:55 -0000 On Mon, Jan 17, 2022 at 11:52:01AM -0500, Jason Pyeron wrote: > > -----Original Message----- > > From: Adam Dinwoodie > > Sent: Monday, January 17, 2022 11:30 AM > > > > The SSH connection sharing function in Cygwin's openssh release, using > > `ssh -M` or the ssh_config.5 ControlMaster configuration, doesn't appear > > to work. Setting up a master connection seems fine, but subsequent SSH > > Sadly, it is a known issue. > > https://stackoverflow.com/questions/20959792/is-ssh-controlmaster-with-cygwin-on-windows-actually-possible/21439862#21439862 Ah, I had found a bunch of discussions on sites like Stack Overflow, but I don't like to assume that problems discussed there are necessarily known to the relevant Cygwin folk unless I've found them discussed on the Cygin mailing lists. In this case, it clearly has been, but I didn't expect to have to search as far back as 2015 to find those discussions!