2008/6/30 Jan Engelhardt [off-list ref]:

Right, since we copy eader files anyway, we can just make it uint8_t flags
without the union.

I like it :-)
Patrick, Thomas, If you want I'll send this fix with version checking patch.

quoted

But I guess we should do version checking between user-space and
kernel more strictly whatever.

That is what we have '.revision' in xt_match/xt_target for.
In this case however it should be fine with just flags.