Bug#1136459: openssh-server: [regression] stopped accepting connections over the WLAN

>Unfortunately, I=E2=80=99m unable to get either of the laptops to switch
>APs (sudo iwconfig wlan0 ap =E2=80=A6), but I did get an iwlwifi crash on
>attempting that=E2=80=A6 so I cannot test changing Fritzboxen atm.

That being said, I managed to take a pcap dump on=C2=B9 the 7330 (client).

What I see there:

1. c=E2=86=92s TC=3D00 tcp syn/ecn/cwr
2. c=E2=86=90s TC=3D00 tcp syn/ack/ecn
3. c=E2=86=92s TC=3D00 tcp ack
4. c=E2=86=92s TC=3D02 ssh version+crlf
5. c=E2=86=90s TC=3D00 tcp ack, no payload
and a few seconds later c=E2=86=92s fin/ack, c=E2=86=90s fin/ack, when I pr=
essed ^C.

When I do a pcap dump on the 7430 (server), I see lots more, with TC=3DB8.

So it seems like certain network devices default to blocking packets
with the new default traffic class octet, which I think you=E2=80=99ll want
to take upstream.

On my side, I=E2=80=99ll try to contact AVM support, but since they got bou=
ght,
unsure whether they will do anything than to tell me to buy a newer
device (it=E2=80=99s not even mine so=E2=80=A6).

=E2=91=A0 https://linuxundich.de/gnu-linux/netzwerk-traffic-direkt-mit-der-=
fritzbox-aufzeichnen-und-mit-wireshark-auswerten/
  =E2=87=92 192.168.1.2/html/capture.html (hidden page)

Gru=C3=9F
//Thorsten
--=20
Thorsten Glaser
Linux / Unix Developer
Tel.: +49 160 91168501
E-Mail: [email protected]

B1 Systems GmbH
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