openssh bugs - Aug 2015 - [Bug 2444] New: ExitOnForwardFailure=yes has no effect

https://bugzilla.mindrot.org/show_bug.cgi?id=2444

            Bug ID: 2444
           Summary: ExitOnForwardFailure=yes has no effect
           Product: Portable OpenSSH
           Version: 6.9p1
          Hardware: amd64
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P5
         Component: ssh
          Assignee: unassigned-bugs at mindrot.org
          Reporter: openssh-bugzilla at dennis.birkholz.biz

The option ExitOnForwardFailure is not working, even if the forward
fails.

A port forward to another (non used) port on the local machine should
cause ssh to exit with error on a connection attempt to the bound port:

Console 1:
> ssh -N -o ExitOnForwardFailure=yes -L 9999:localhost:9998 localhost
Console 2:
> telnet localhost 9999
ssh should exist with a return code != 0 but instead "channel 3: open
failed: connect failed: Connection refused" is printed and the ssh
process keeps running.

I used two computers to exclude a problem with my version:
Gentoo with "OpenSSH_6.9p1-hpn14v5, OpenSSL 1.0.1p 9 Jul 2015"
Debian with "OpenSSH_6.7p1 Debian-5, OpenSSL 1.0.1k 8 Jan 2015"

All combinations of both computers with local and remote forwards show
that ExitOnForwardFailure=yes is ignored entirely.

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https://bugzilla.mindrot.org/show_bug.cgi?id=2444

--- Comment #1 from openssh-bugzilla at dennis.birkholz.biz ---
The error seems to be existing longer:
http://superuser.com/questions/806875/ssh-port-forwarding-and-remote-bind-failure-exitonforwardfailure-not-working

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |djm at mindrot.org,
                   |                            |dtucker at zip.com.au
           Assignee|unassigned-bugs at mindrot.org |djm at mindrot.org
   Attachment #2693|                            |ok?(dtucker at zip.com.au)
              Flags|                            |

--- Comment #2 from Damien Miller <djm at mindrot.org> ---
Created attachment 2693
  --> https://bugzilla.mindrot.org/attachment.cgi?id=2693&action=edit
describe what ExitOnForwardFailure actually applies to

This is actually intended behaviour - the forwarding was established
OK, but the destination server/port was not accepting connections.

The manual page is a bit unclear though, so that needs to be fixed.

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |2451


Referenced Bugs:

https://bugzilla.mindrot.org/show_bug.cgi?id=2451
[Bug 2451] Bugs intended to be fixed in 7.2
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Darren Tucker <dtucker at zip.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #2693|ok?(dtucker at zip.com.au)     |ok+
              Flags|                            |

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #3 from Damien Miller <djm at mindrot.org> ---
Close all resolved bugs after 7.3p1 release

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