From Fedora Project Wiki

Warren is trying to do the foolish task of figuring out if Apple MAC address prefixes are unique between PPC and Intel Macs. Please e-mail wtogami at redhat dot com if you have any MAC not already listed to add to the prefixes listed below. I especially want to know if you found a MAC address that upsets the trend.

Built-in Ethernet only! I only care about netboot, so wireless and add-on cards are not important here.

Why is Warren doing this? DHCP server has no other way of knowing the client is a PPC to give it a PPC netboot root-path. DHCP server can see the AAPLBSDPC vendor-client-identifier and correctly gives it yaboot, which then downloads kernel/initrd and boots Linux. But the initrd does DHCP discover a second time with the unhelpful vendor-client-identifer "nash", where it cannot differentiate i386 and PPC.

INTEL MAC

00:16:CB Macbook and Mini
00:17:F2 Macbook
00:1B:63 Macbook Pro
00:1F:F3 Macbook
00:1F:5B Macpro
00:22:41 Macbook Pro

PPC MAC

00:03:93 G3 iBook, G4 tower
00:0A:95 G5
00:0D:93 G5, G4 Powerbook, G4 iBook
00:14:51 G5
00:30:65 G3 iMac 400MHz