[Bug 264238] WiFi stops working after upgrade from 13.0 to 13.1, AR9285

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264238

--- Comment #16 from Bjoern A. Zeeb <bz@FreeBSD.org> ---
(In reply to J.R. Oldroyd from comment #15)

or some change in certain option handling now makes us send a bad request and
depending on server being more lenient or not ..

It's like 5 changes changes in dhclient (if the issue is there):

% git log --oneline freebsd/releng/13.0..freebsd/releng/13.1 sbin/dhclient/
586827df60ce dhclient: support VID 0 (no vlan) decapsulation
75df39760ce0 dhclient: remove patching of static values in BPF programs
3bcf919c4e89 dhclient: skip_to_semi() consumes semicolon already
8751bff1a72e dhclient: support supersede statement for option 54
50ecd99be523 bpf: Add an ioctl to set the VLAN Priority on packets sent by bpf

I would highly prefer to have a binary tcpdump written to a file from both
working and non-working setup. Not a textdump of such, so that we can actually
inspect packets.


also I am tempted at this point to put this over to freebsd-net as it seems it
may not be a wireless issue given kernels can be interchanged (13.0 userland
reported to work on 13.1 kernel) and we see associated.  So it's unlikely a
broad/multicast wifi problem.

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