Re: [HAM-AG] [IPv6] Request for feedback: draft-evan-amateur-radio-ipv6

Donald,

I largely agree with Jeffrey. I don't imagine every radio operator
would be in a network all at once so in theory it shouldn't be a
problem. BUT I think it is a good idea to plan for such a thing
anyways. I wondered about the drawbacks of truncating SHA256. Do you
have a recommendation for a better choice of hashing algorithm for
this use case?

Callsigns are almost always going to be shorter than any string they
hash into, plus the character set is just ASCII. There must be
something well suited for this.

On Wed, Feb 15, 2023 at 7:51 AM Jeffrey (Zhaohui) Zhang
<zzhang@juniper.net> wrote:
>
> Hi Donald,
>
>
>
> The number of stations connecting to this network would be limited, though. Does that matter?
>
>
>
> Hi Evan,
>
>
>
> I am a new ham (about four years) and have never tried AR-based IP network. Can you share some pointers?
>
>
>
> Thanks.
>
> Jeffrey KC1LWE
>
>
>
>
>
> Juniper Business Use Only
>
> From: HAM-AG <ham-ag-bounces@ietf.org> On Behalf Of Donald Eastlake
> Sent: Tuesday, February 14, 2023 10:23 PM
> To: Evan Pratten <ewpratten@gmail.com>
> Cc: draft-evan-amateur-radio-ipv6@ietf.org; ham-ag@ietf.org
> Subject: Re: [HAM-AG] [IPv6] Request for feedback: draft-evan-amateur-radio-ipv6
>
>
>
> [External Email. Be cautious of content]
>
>
>
> Hi,
>
>
>
> An interesting simple draft.
>
>
>
> I think it needs an estimate of the probability of duplication. There are about 10,000,000 ham radio operators in the world. So I think the probability of a conflict if they were all using this draft would be
>
>
>
> 1 - e**(( - 10**7)*(10**7 - 1)/(2*(2**60)))
>
>
>
> or approximately  1 in 23,057.
>
>
>
> Thanks,
> Donald
> ===============================
>  Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
>  2386 Panoramic Circle, Apopka, FL 32703 USA
>  d3e3e3@gmail.com
>
>
>
>
>
> On Tue, Feb 14, 2023 at 3:43 PM Evan Pratten <ewpratten@gmail.com> wrote:
>
> Hello all,
>
> I have been working on my first I-D, an alternate method for
> generating IPv6 IIDs from amateur radio callsigns.
>
> After receiving good feedback from a small handful of people, I feel
> now is the time to open this up to comments from the working groups.
>
> Please send along any comments, suggestions, and questions you may have.
>
> A Method for Deriving Stable IPv6 Interface Identifiers from Amateur
> Radio Callsigns:
> https://datatracker.ietf.org/doc/draft-evan-amateur-radio-ipv6/
>
> Thanks in advance for the feedback,
>  - Evan
>
> ---
> Evan Pratten (VA3ZZA)
> https://ewpratten.com
>
> --------------------------------------------------------------------
> IETF IPv6 working group mailing list
> ipv6@ietf.org
> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> --------------------------------------------------------------------