Possible bug in LG4120 A101 firmware

When I try to burn CMC MAG.E01 disks, I am given the choice of:
2X 4X and 8X - but no actual 6X option

Would others consider this as a bug, or just a set burn strategy? to leave out 6X

Other 8X +R media can be burnt at 6X …

what does the A102 fw say?

Firmware A101 does similar for RITEKR03 only giving 4X and 8X burn options.

Firmware A101 gives 4X 8X and 12X for RICOHJPNR02

Looks like they deliberately left 6X out for +R media