[rsyslog] Only log from network devices to database

[Sepperlot]

Hello.

I'm trying to log messages from various network devices to rsyslog and
write them into a database.
Therefore I use a setup as described in
http://www.rsyslog.com/doc-rsyslog_mysql.html

My (simple) rsyslog.conf contains the following:

$ModLoad imudp
$UDPServerAddress x.x.x.x
$UDPServerRun 1514 # standard port is used by syslog-ng

$ModLoad ommysql
*.*             :ommysql:localhost,DBNAME,DBUSER,DBPASS


This writes all arriving log messages to the database and I can watch
them with phplogcon. Up to here everything is ok and works.

Now I only want to log messages from specific network devices identified
by ip address but I'm totaly lost when it comes to combine filter
conditions and actions. I've tried

:fromhost-ip, isequal "IP.IP.IP.IP" \
:ommysql:localhost,DBNAME,DBUSER,DBPASS

*.* :fromhost-ip, isequal "IP.IP.IP.IP" \
:ommysql:localhost,DBNAME,DBUSER,DBPASS

but obvious this is BS ;)
Goal is to log only network devices and maybe later log different
devices to different databases.

The backslash is added by me only in this mail. The commands are all in
one line.

Any help is appreciated.

Best regards
Sebastian