"Michel Py" <michel@arneill-py.sacramento.ca.us> writes:
+-----+---------+---------+-------+--------------+ | 8 | 16 | 16 | 8 | 16 | | | hostid | | index | routernumber | +-----+---------+---------+-------+--------------+ 02 ca : fe FF : FE 77 : beef
I'm talking about network address derived from router number and some local interface index. This is not possible in the 16 bits available in the assignment.
cisco3640(config-if)#mac-address ca.fe77.beef
Changing the MAC address to get an easily usable IP address seems quite perverse to me.
The replacement for RFC2373 (draft-ietf-ipngwg-addr-arch-v3-11.txt) uses _modified_ EUI-64, and you can do almost whatever you want, such as:
ipv6 address 2001:db8::02CA:FE00:0077:BEEF/64 ipv6 address 2001:db8::02:CAFE:77:BEEF/64 ipv6 address 2001:db8::1/64
All of which are compliant modified EUI-64 addresses.
I stand corrected. Thank you for pointing this out. This seems not to be common knowledge, as posts by Sam showed. Robert