​Hi,

FreeBSD's official bird port version is 1.6.0: If you are using bird 1.6.3, this mean you're using your own upgraded version of bird.

But take care to use the UDP RAW socket bird patch from the FreeBSD port [2] if you are running FreeBSD 11.

Meanwhile you can try this bird port patch [3] that upgrade FreeBSD port from 1.6.0 to 1.6.3: It's fix your problem.

And I've proposed a push [4] for including this patch to bird code.

Sorry for didn't react more rapidly,

Olivier

[1] https://wiki.freebsd.org/SOCK_RAW
[2] https://svnweb.freebsd.org/ports/head/net/bird/files/patch-bsd-sysdep.h?revision=369382&view=markup

[3] https://github.com/ocochard/BSDRP/blob/master/BSDRP/patches/ports.bird.patch
[4] https://github.com/BIRD/bird/pull/1