sshd didn't run after upgrade to FreeBSD 8.4

[Miroslav Lachman]

Kimmo Paasiala wrote:
> On Thu, Jun 20, 2013 at 2:40 AM, Steven Hartland
> <killing at multiplay.co.uk>  wrote:
>>
>>
>> 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.

Yes, this is my point - I left my old and previously working sshd_config 
with empty VersionAddendum.

> Err yes, your right. The proper way to specify empty VersionAddendum
> based on some googling seems to be now:
>
>
> VersionAddendum ""

This is not true, it will add two quotes to the banner:
SSH-2.0-OpenSSH_6.1_hpn13v11 ""


Default banner (no VersionAddendum in sshd_config):
SSH-2.0-OpenSSH_6.1_hpn13v11 FreeBSD-20120901


So I am fine with:
VersionAddendum -

It will print:
SSH-2.0-OpenSSH_6.1_hpn13v11 -

I don't need really empty addendum, I just don't want to show FreeBSD 
version info and empty VersionAddendum was working for me many years. 
Now it breaks sshd after final reboot on two of our upgraded servers.

So Release Notes or better UPDATING entry will warn other users before 
the same mistake.

Thanks to the remote management / KVM on Sun Fire and Supermicro servers 
that I didn't need to drive to the datacenter and I can fix it remotely.

Miroslav Lachman