@coding, thanks, that's what I was guessing, but was feeling more OCD than usual today.
I just saw the notes similar to this in each section describing the various oscillators, so I think that's a pretty strong "Yes". @lefty, you disagree, though?
If the crystal frequency exceeds the specification of the device (depends on VCC), the CKDIV8
Fuse can be programmed in order to divide the internal frequency by 8. It must be ensured
that the resulting divided clock meets the frequency specification of the device.