Re: Extending a /64

[David Farmer <[e-mail]>]

On Tue, Nov 17, 2020 at 3:44 AM Tony Whyman <[e-mail]>
wrote:

> On 17/11/2020 02:55, David Farmer wrote:
> > ou mention that airplanes can fall out of the sky, it would be really
> > bad if an airplane every fell out of the sky, or collided with another
> > airplane, because of an address conflict.
>
> I should probably make it clear that irrespective of whatever addressing
> plan we come up with - this will never happen. There is strength in
> depth in the system.
>

I don't actually think something as simple as an address conflict would
ever be the primary cause of an aircraft incident. However, it is not that
difficult to conceive of situations where such an address conflict, causing
a communication failure, could be a contributory cause to an incident. If
you combined a communications outage with multiple other human or systems
failures it is difficult to exclude the possibility of such an issue being
a contributory cause of an incident. So, it would seem inappropriate to
have an addressing scheme like ULA were the possibility, however small, of
an address conflict is part of normal operation.

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