[ppml] Those pesky EUI-64's causing a shortage of IPv6 space (Was: [address-policy-wg] Those pesky ULAs again)

Dan.Thorson at seagate.com Dan.Thorson at seagate.com
Mon Jun 4 13:25:37 EDT 2007

Jeroen Massar said:
> But why would anybody want  to 'ban' EUI-64 configured addresses?
> Your own network is exactly that: your own network.
> There is *NO* requirement at all to use EUI-64.

OK, here's where I may express my ignorance... but RFC2373 explicitly
(in section 2.4, just after the table of prefix allocations)

     (2) The format prefixes 001 through 111, except for Multicast
          Addresses (1111 1111), are all required to have to have 64-bit
          interface identifiers in EUI-64 format.  See section 2.5.1 for

To me that sounds like there is indeed a requirement to use EUI-64.  The
issue then becomes if you purchase a device which is RFC-complient then it
may not support non-EUI-64 addressing.  Right?


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