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Trouble reaching IPv4 websites

Hi everybody!

I have some trouble with reaching IPv4 websites every now and then. My internet connection is via "Unitymedia" so meaning Coax-Cable. As long as i am connected, everything is fine. Speed is good, connection is stable.

But every 1-3 Days (seems randomly) i am not able to connect to any IPv4 website. When i do a IPv4 check, i don't have any IPv4. Of course i reached out for my ISP, but they couldn't find out any issue from their side. I changed my router, for checking if there is a problem, but it doesn't change anything...error still occurs. I searched and searched and searched but couldn't find any solution (or maybe didn't understand)...and then downloaded Wireshark.

While the error occurs, and i start Wireshark its showing a message like:

"81.210.176.137 192.168.178.20 ICMP 106 Destination unreachable (Communication administratively filtered)"

This doesn't appear when i restart my router & the connection is "repaired".

Problem is: i have no clue what im seeing/where the problem is coming from. Is it my network? Or is it my ISP having an error?

Im not able to upload any screenshot...not enough points :/ Sorry about that...

Trouble reaching IPv4 websites

Hi everybody!

I have some trouble with reaching IPv4 websites every now and then. My internet connection is via "Unitymedia" so meaning Coax-Cable. As long as i am connected, everything is fine. Speed is good, connection is stable.

But every 1-3 Days (seems randomly) i am not able to connect to any IPv4 website. When i do a IPv4 check, i don't have any IPv4. Of course i reached out for my ISP, but they couldn't find out any issue from their side. I changed my router, for checking if there is a problem, but it doesn't change anything...error still occurs. I searched and searched and searched but couldn't find any solution (or maybe didn't understand)...and then downloaded Wireshark.

While the error occurs, and i start Wireshark its showing a message like:

"81.210.176.137 192.168.178.20 ICMP 106 Destination unreachable (Communication administratively filtered)"

This doesn't appear when i restart my router & the connection is "repaired".

Problem is: i have no clue what im seeing/where the problem is coming from. Is it my network? Or is it my ISP having an error?

Im not able Here is a link to upload any screenshot...not enough points :/ Sorry about that...an actual capture file: https://www.dropbox.com/s/snzo6uqrujchui4/Wireshark_05_06_20.pcapng?dl=0