Comment 5 for bug 1593657

I am reporting here the debugging logs I've got with "-vvv" and also expunging all stuff not related to the bug:

OpenSSH_7.2p2 Ubuntu-4ubuntu1, OpenSSL 1.0.2g-fips 1 Mar 2016
debug1: auto-mux: Trying existing master
debug1: Control socket "/tmp/sshcontrol-f1b458a85cd2aa9d5c115abc12afee9f485ad6b0" does not exist
debug1: setting up multiplex master socket
debug3: muxserver_listen: temporary control path /tmp/sshcontrol-f1b458a85cd2aa9d5c115abc12afee9f485ad6b0.pC6BCXUsqE7aLbzh
debug2: fd 5 setting O_NONBLOCK
debug3: fd 5 is O_NONBLOCK
debug3: fd 5 is O_NONBLOCK
debug1: channel 1: new [/tmp/sshcontrol-f1b458a85cd2aa9d5c115abc12afee9f485ad6b0]
debug3: muxserver_listen: mux listener channel 1 fd 5
debug2: fd 5 setting O_NONBLOCK
debug1: forking to background
debug1: channel 2: new [mux-control]
debug3: channel_post_mux_listener: new mux channel 2 fd 6
debug3: mux_master_read_cb: channel 2: hello sent
debug3: mux_master_read_cb: channel 2 packet type 0x00000001 len 4
debug2: process_mux_master_hello: channel 2 slave version 4
debug2: mux_client_hello_exchange: master version 4
debug3: mux_client_forwards: request forwardings: 1 local, 0 remote
debug3: mux_master_read_cb: channel 2 packet type 0x10000006 len 39
debug2: process_mux_open_fwd: channel 2: request dynamic forward 127.72.1.2:8080 -> *
debug2: process_mux_open_fwd: found existing forwarding
debug3: mux_client_request_session: entering
debug3: mux_client_request_alive: entering

Please, note that the first "debug3" log line is quoting a temporary socket with expanded name.