Comment 13 for bug 1342400

Im getting this on my Rasspberry Pi 2 also ... every few seconds ... v annoying
192.168.1.15 is a windows 10 box that is hosting a share im connected to using CIFS

Sep 14 07:41:22 pi-server avahi-daemon[2628]: Invalid response packet from host 192.168.1.15.
Sep 14 07:41:47 pi-server avahi-daemon[2628]: Invalid response packet from host 192.168.1.15.
Sep 14 07:41:51 pi-server avahi-daemon[2628]: Invalid response packet from host 192.168.1.15.

liked the idea of getting a script to run to clean it out
added this into a script file in /etc/cron.hourly

sed -i".bak" '/Invalid response packet from host/d' /var/log/syslog

seem to work well....just removes the lines directly from the syslog and creates a backup /var/log/syslog.bak