[Bug 252596] ping to 255.255.255.255 does not set broadcast MAC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252596

--- Comment #9 from Inoki <veyx.shaw@gmail.com> ---
(In reply to Mike Karels from comment #8)

Thanks very much for the comments !

Yes, a simple UDP broadcast using 255.255.255.255 with default route returns
"Network is unreachable" because of no route.

Our application wants to use a UDP broadcast through 255.255.255.255 to
discover a certain service. In the previous kernels, including the FreeBSD part
that macOS is using, it works fine. But we found that it does not work any more
on FreeBSD 13 (although we have not tested it for long time).

Finally, our workaround is to iterate all the non-local interfaces and send to
their broadcast addresses. This should be coherent with the current design in 
the FreeBSD kernel.

Thanks again !

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