Re: [EXTERNAL] Re: [v6ops] How do you solve 3GPP issue if neither operator nor handset supports PD?

[Philip Homburg <[e-mail]>]

> Having the Type field
> would allow an administrator to manually configure an
> administratively-assigned LLA without risk of colliding with another
> LLA that was configured via one of the multiple and growing numbers
> of LLA autoconfiguration methods. This is true today, and will
> become even more true as more and more LLA autoconfiguration methods
> are standardized.

Obviously, a manually configured LLA doesn't conflict with EUI-64. We can
assume that an administrator is smart enough to not set the middle two bytes
of the IID to FFFE. So that doesn't happen.

The chance that a manually configured IID collides with a pseudo random is 1 in
2^64. Realistically that doesn't happen.

In practice we also see that nodes with manually configured IIDs have all other
IID mechanisms disabled.

Any future IID mechanism that does not try to use IID bits for other purposes
is pseudo random. So there no risk of collisions.