0.6.31 spews messages such as:
Mar 10 08:00:28 srv avahi-daemon: Invalid response packet from host 192.168.32.1.
which are mainly due to Windows clients sending trash.
To silence these messages, edit
/etc/rsyslog.conf and add the line:
:msg, contains, "Invalid response packet from host" stop
right before the line:
and then restart
service rsyslog restart