the cups errors on the server (due to the client not working) are coming..
E [04/Jan/2014:00:17:21 +0100] Unable to open listen socket for address [v1.::]:631 - Address family not supported by protocol.
E [04/Jan/2014:18:28:36 +0100] [cups-deviced] PID 2378 (snmp) stopped with status 1!
E [04/Jan/2014:18:34:17 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:34:26 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:34:27 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:34:28 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:34:29 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:34:29 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:39:58 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:40:08 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:40:10 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:40:10 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:40:10 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:40:55 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:40:55 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:40:55 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:40:55 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:41:09 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:18:41:09 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [04/Jan/2014:23:36:09 +0100] [cups-deviced] PID 2598 (snmp) stopped with status 1!
E [04/Jan/2014:23:36:14 +0100] SSL shutdown failed: Error in the push function.
E [04/Jan/2014:23:37:08 +0100] [cups-deviced] PID 2632 (snmp) stopped with status 1!
E [04/Jan/2014:23:37:23 +0100] SSL shutdown failed: Error in the push function.
E [04/Jan/2014:23:37:37 +0100] [cups-deviced] PID 2658 (snmp) stopped with status 1!
W [04/Jan/2014:23:38:56 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-Gray..' already exists
W [04/Jan/2014:23:38:56 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-RGB..' already exists
W [04/Jan/2014:23:38:56 +0100] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-HP_officejet_4100_series' already exists
W [04/Jan/2014:23:38:56 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-Gray..' already exists
W [04/Jan/2014:23:38:56 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-RGB..' already exists
W [04/Jan/2014:23:38:56 +0100] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-HP_officejet_4100_series' already exists
W [04/Jan/2014:23:39:01 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-Gray..' already exists
W [04/Jan/2014:23:39:01 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-RGB..' already exists
W [04/Jan/2014:23:39:01 +0100] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-HP_officejet_4100_series' already exists
W [04/Jan/2014:23:39:01 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-Gray..' already exists
W [04/Jan/2014:23:39:01 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-RGB..' already exists
W [04/Jan/2014:23:39:01 +0100] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-HP_officejet_4100_series' already exists
E [04/Jan/2014:23:50:48 +0100] Avahi client failed, closing client to allow a clean restart
E [04/Jan/2014:23:51:07 +0100] Unable to open listen socket for address [v1.::]:631 - Address family not supported by protocol.
E [06/Jan/2014:13:27:28 +0100] Unable to encrypt connection from 192.168.178.23 - A TLS packet with unexpected length was received.
E [06/Jan/2014:22:52:57 +0100] Unable to encrypt connection from 192.168.178.23 - A TLS packet with unexpected length was received.
E [06/Jan/2014:22:52:57 +0100] Unable to encrypt connection from 192.168.178.23 - A TLS packet with unexpected length was received.
E [06/Jan/2014:22:52:57 +0100] Unable to encrypt connection from 192.168.178.23 - A TLS packet with unexpected length was received.
E [06/Jan/2014:22:52:57 +0100] Unable to encrypt connection from 192.168.178.23 - A TLS packet with unexpected length was received.
E [06/Jan/2014:22:52:57 +0100] SSL shutdown failed: Error in the push function.
E [06/Jan/2014:22:57:06 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [06/Jan/2014:22:58:09 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [06/Jan/2014:22:59:05 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [06/Jan/2014:22:59:08 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [06/Jan/2014:23:13:49 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [06/Jan/2014:23:13:53 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [06/Jan/2014:23:56:39 +0100] Avahi client failed, closing client to allow a clean restart
E [06/Jan/2014:23:56:58 +0100] Unable to open listen socket for address [v1.::]:631 - Address family not supported by protocol.
E [11/Jan/2014:19:06:07 +0100] SSL shutdown failed: Error in the push function.
E [12/Jan/2014:00:01:52 +0100] Avahi client failed, closing client to allow a clean restart
E [12/Jan/2014:00:02:12 +0100] Unable to open listen socket for address [v1.::]:631 - Address family not supported by protocol.
E [12/Jan/2014:23:41:36 +0100] Avahi client failed, closing client to allow a clean restart
E [12/Jan/2014:23:41:56 +0100] Unable to open listen socket for address [v1.::]:631 - Address family not supported by protocol.
E [14/Jan/2014:00:00:47 +0100] Avahi client failed, closing client to allow a clean restart
E [14/Jan/2014:00:01:07 +0100] Unable to open listen socket for address [v1.::]:631 - Address family not supported by protocol.
E [18/Jan/2014:17:42:26 +0100] [Job 63] Stopping unresponsive job!
E [18/Jan/2014:22:52:44 +0100] Avahi client failed, closing client to allow a clean restart
E [18/Jan/2014:22:53:03 +0100] Unable to open listen socket for address [v1.::]:631 - Address family not supported by protocol.
E [20/Jan/2014:06:55:47 +0100] Avahi client failed, closing client to allow a clean restart
E [20/Jan/2014:06:56:06 +0100] Unable to open listen socket for address [v1.::]:631 - Address family not supported by protocol.
E [25/Jan/2014:00:49:48 +0100] Avahi client failed, closing client to allow a clean restart
E [25/Jan/2014:00:50:08 +0100] Unable to open listen socket for address [v1.::]:631 - Address family not supported by protocol.
W [25/Jan/2014:17:38:41 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-Gray..' already exists
W [25/Jan/2014:17:38:41 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-RGB..' already exists
W [25/Jan/2014:17:38:41 +0100] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-HP_officejet_4100_series' already exists
W [25/Jan/2014:17:38:42 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-Gray..' already exists
W [25/Jan/2014:17:38:42 +0100] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'HP_officejet_4100_series-RGB..' already exists
W [25/Jan/2014:17:38:42 +0100] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-HP_officejet_4100_series' already exists
E [25/Jan/2014:17:39:41 +0100] Avahi client failed, closing client to allow a clean restart
E [25/Jan/2014:17:40:00 +0100] Unable to open listen socket for address [v1.::]:631 - Address family not supported by protocol.
E [25/Jan/2014:19:06:33 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:06:38 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:24:59 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:25:00 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:25:23 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:28:33 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:28:41 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:28:42 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:28:47 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:28:47 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:28:54 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:39:07 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:39:10 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:39:10 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
E [25/Jan/2014:19:39:10 +0100] Request from "192.168.178.23" using invalid Host: field "druckerprinterserverraspberrypi.fritz.box:631"
I am still searching..