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SubjectRe: Header files and interfaces
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> Actually, in this case net-tools really is almost completely to blame.  It 
> used the presence or absence of OLD_SIOCSIFARP to decide whether or not
> SIOCSIFARP actually referred to the "old" or "new" variant. This would have
> gone wrong under libc5 as well if the OLD ioctl was deleted in some future
> kernel.

What's wrong with keeping backwards compatibility? We've had the
oldstat() stuff, we've had the "warning: uses broken flock()
emulation" stuff, now we'll do the same with the cua* devices.
All to make the transition to newer kernels easy.

Perhaps the old functions can be omitted from the second-to-next
generation kernels so that they will give ENOSYS, but there's no point
in deleting defines from the headers.

olaf


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