Logfile filled with ICMPv4

Hello, my Logfile gets filled with thousands of ICMPv4 Blocked Events.
( Screenshot https://abload.de/img/unbenanntytf0f.png )

I tried adding global rule to allow these, but they still appear
( Screenshot https://abload.de/img/unbenannt2n7ctj.png )

the Source IP is my Router (Compal CH7466CE Wireless Voice Gateway)

any idea what to do?

Are you sure it is still happening and you’re not looking at old logs? You should clear the log file and check again.

Yes, I wouldnt Post here if it would work like expected, if I dont purge the log once per Day, it gets flooded