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Re: Extending a /64

Simon Hobson <linux@thehobsons.co.uk> Tue, 17 November 2020 17:52 UTC

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Subject: Re: Extending a /64
From: Simon Hobson <linux@thehobsons.co.uk>
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Philip Homburg <pch-ipv6-ietf-6@u-1.phicoh.com> wrote:

> I don't understand your remark about balloons. If balloons have no electrical
> systems, how do they run IPv6? 

Handheld portable device - powered by internal batteries. One step down from (e.g.) gliders where there is a very basic electrical system connecting batteries to radio & vario.
As it happens there are also some powered aircraft where the electrical/comms system comprises of a battery powered handheld in a bracket.



Tony Whyman <tony.whyman@mccallumwhyman.com> wrote:

> I believe that American Airlines currently has the largest fleet with about 1,300 aircraft. You would need a minimum of 11 bits for this fleet - rounded up to 12 for a nibble boundary.

Out of curiosity mainly, but what is the proposal to handle the potentially many thousands (millions ?) of very small operators ?

As I mentioned in an earlier message, typically technology tends to filter down to individual private owners over time - c.f. Mode-S now mandated in some airspace, and I know individuals with TCAS in small aircraft. It's not unimaginable that the sort of system you are talking about will become mandatory in certain bits of airspace - just like Mode-S is now.

While it's a bit tongue in cheek to mention balloons, I can see that sooner or later any system would need to cope with "many small operators". As pointed out, having a fixed allocation size means you'd quickly run out.


Simon

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