UDP broadcast is broken in this kernel - the destination ethernet address field is mangled. See:
https://lore.kernel.org/regressions/20250823121336.18492-4-bacs@librecast.ne...
As this is bug-for-bug compatible with mainline, I believe stable policy is to wait until this is fixed there before backporting a fix.
All other Librecast network tests passing.
# Librecast Test Results
010/010 [ OK ] libmld 120/120 [ OK ] liblibrecast
CPU/kernel: Linux auntie 6.16.3-rc1-g3fb8628191b4 #47 SMP PREEMPT_DYNAMIC Sat Aug 23 12:39:17 -00 2025 x86_64 AMD Ryzen 9 9950X 16-Core Processor AuthenticAMD GNU/Linux
Tested-by: Brett A C Sheffield bacs@librecast.net