New knockd behaviour under Wheezy

[Christophe GARAULT <christophe@garault.org>]

Hi list,

I recently upgraded my server to Wheezy. Previously everything was 
working
great.

Now knockd acts like if it only gets the first sequence of my knocks 
and
doesn't receive the remaining ones.

On the other hand if I throw the sequence with multiple calls to knock 
on the
client then the daemon receives all of them and run the associated 
command
as expected. I also tried to increase the value of seq_timeout from 5 
to 15
without any success.

Ex:

on client: $ knock myserver 123:tcp 321:udp 456:tcp 654:udp

on server: # cat /var/log/knockd.log
[...]
[2013-05-31 08:45] 93.xxx.xxx.xxx: openSSH: Stage 1

and then
on client: $ knock myserver 123:tcp && knock myserver 321:udp && knock 
myserver 456:tcp && knock myserver 654:udp

on server: # cat /var/log/knockd.log
[...]
[2013-05-31 08:50] 93.xx.xx.xx: openSSH: Stage 1
[2013-05-31 08:50] 93.xx.xx.xx: openSSH: Stage 2
[2013-05-31 08:50] 93.xx.xx.xx: openSSH: Stage 3
[2013-05-31 08:50] 93.xx.xx.xx: openSSH: Stage 4
[2013-05-31 08:50] 93.xx.xx.xx: openSSH: OPEN SESAME


Any idea of what causes this behaviour ?

Regards.
Christophe Garault