----- Original Message -----
From: "Kimmo Paasiala" <kpaas...@gmail.com>
To: "Miroslav Lachman" <000.f...@quip.cz>
Cc: "freebsd-stable Stable" <freebsd-stable@freebsd.org>
Sent: Thursday, June 20, 2013 12:32 AM
Subject: Re: sshd didn't run after upgrade to FreeBSD 8.4
On Thu, Jun 20, 2013 at 2:29 AM, Miroslav Lachman <000.f...@quip.cz> wrote:
Kimmo Paasiala wrote:
On Thu, Jun 20, 2013 at 1:17 AM, Miroslav Lachman<000.f...@quip.cz>
wrote:
The version of sshd in FreeBSD 8.4 is not backward compatible with older
version from 8.3.
OpenSSH_5.4p1 (on FreeBSD 8.3)
OpenSSH_6.1p1 (on FreeBSD 8.4)
# sshd -t
/etc/ssh/sshd_config line 19: Missing argument.
On line 19, there is:
VersionAddendum
It was OK in older versions. It will remove any default text appended to
SSH
protocol banner (for example 'FreeBSD-20120901').
On FreeBSD 8.4, there must be some string (any single character)
I was really badly surprised that the machine was re-booted without ssh
access!
I think this change is worth to mention in Release Notes
Miroslav Lachman
How did you update to 8.4? This sounds more like messing up the
mergemaster(8)/freebsd-update merge procedure than a real problem with
the config file.
This is the source configuration file straight from SVN releng/8.4
branch and as you can see the VersionAddendum on line 115 is commented
out there:
http://svnweb.freebsd.org/base/releng/8.4/crypto/openssh/sshd_config?view=markup
It was upgraded by freebsd-update. It was intentionally left here as it was
valid configuration for many years.
That's why I think it should be mentioned in the Release Notes, that it is
no longer valid configuration (empty VersionAddendum).
The fact, that it is no longer in default sshd_config file doesn't mean it
can't be used at all. It is still valid in the form which was in old default
config: "VersionAddendum FreeBSD-20100308", but is no longer valid if empty.
That's the point.
(and empty VersionAddendum was widely used, it is not my invention)
Miroslav Lachman
You're missing my point totally. The line is commented out in the
official source of 8.4 and there for I have very hard time believing
that it would show up uncommented on a fresh 8.4 installation.
I believe Miroslav is saying he left his old but previously working
sshd_config as was when updating, so its a change to the code which
now fails on an empty VersionAddendum, where it previously didn't
hence the problem.
Regards
Steve
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