There is *NO* abi stability in -head

[Hans Petter Selasky]

On 10/23/17 22:35, Mateusz Guzik wrote:
> This is your friendly reminder that in head struct layouts can change
> and each update requires you to rebuild *all* modules (including ones
> which come from ports). In practice you can get away without it most of
> the time, but if in doubt or seeing funny crashes - *recompile* and test
> with that.
> 

Hi,

And for developers making this changes, consider bumping the 
__FreeBSD_version macro in sys/sys/param.h along with your commit. It 
forces recompilation of external kernel modules :-)

--HPS