>Unfortunately, I’m unable to get either of the laptops to switch >APs (sudo iwconfig wlan0 ap …), but I did get an iwlwifi crash on >attempting that… so I cannot test changing Fritzboxen atm.
That being said, I managed to take a pcap dump on¹ the 7330 (client). What I see there: 1. c→s TC=00 tcp syn/ecn/cwr 2. c←s TC=00 tcp syn/ack/ecn 3. c→s TC=00 tcp ack 4. c→s TC=02 ssh version+crlf 5. c←s TC=00 tcp ack, no payload and a few seconds later c→s fin/ack, c←s fin/ack, when I pressed ^C. When I do a pcap dump on the 7430 (server), I see lots more, with TC=B8. So it seems like certain network devices default to blocking packets with the new default traffic class octet, which I think you’ll want to take upstream. On my side, I’ll try to contact AVM support, but since they got bought, unsure whether they will do anything than to tell me to buy a newer device (it’s not even mine so…). ① https://linuxundich.de/gnu-linux/netzwerk-traffic-direkt-mit-der-fritzbox-aufzeichnen-und-mit-wireshark-auswerten/ ⇒ 192.168.1.2/html/capture.html (hidden page) Gruß //Thorsten -- Thorsten Glaser Linux / Unix Developer Tel.: +49 160 91168501 E-Mail: [email protected] B1 Systems GmbH Osterfeldstraße 7 / 85088 Vohburg / https://www.b1-systems.de/ GF: Ralph Dehner / Unternehmenssitz: Vohburg / AG: Ingolstadt, HRB 3537
