This results in extending MAC addresses (such as IEEE 802 MAC address) to Modified EUI-64 using only FF-FE (and never FF-FF) and with the U/L bit inverted.
See tuleneb MAC-aadresside laiendustest (nagu IEEE 802 MAC-aadress), et muudetud EUI-64 kasutaks ainult FF-FE-d ja mitte kunagi FF-FF-i ning et U/L-bitt on vastupidine.