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Re: [v6ops] SLAAC renum: Problem Statement & Operational workarounds

Brian E Carpenter <brian.e.carpenter@gmail.com> Sat, 26 October 2019 01:30 UTC

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To: Mark Smith <markzzzsmith@gmail.com>
References: <m1iNIFE-0000IwC@stereo.hq.phicoh.net> <d1b6855d-bde9-7b53-4809-0846bb9772e4@si6networks.com> <CAO42Z2x7vudujw5t++obry56g=VNjQXXTHFK8pBPk0jmk78Bcg@mail.gmail.com> <CAJoHkZ8pTjszP0vw4BjX0HUhmPa6wJONzdy2JEm5iqAfBUvjRg@mail.gmail.com> <CAO42Z2wCYi4KWTEz1hUSPVr9+hu8GaHRkPuvQQ2P00knvnPaaQ@mail.gmail.com> <848BA3B3-36B4-4C42-86D0-88759BC45D5A@employees.org> <A61279DA-4678-4A10-9117-6CA227AE2FA5@cisco.com> <A90AD47E-00E2-4EAB-8BD8-142CC10A6B6F@employees.org> <m1iNv5U-0000KUC@stereo.hq.phicoh.net> <CAO42Z2xUa7n6uUz9gtiZyZR39KFhsQ8mLeiyQdyERGTcJcXWWA@mail.gmail.com> <CADzU5g77cvfZknAzSkkNTP5vT73MZnSdGuOJ4y0Uba8XMgiASA@mail.gmail.com> <CAO42Z2xHYU3y455XsM5grvG0360b9RigCaN=L+cc27_oyxhq0w@mail.gmail.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Cc: IPv6 Operations <v6ops@ietf.org>
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Date: Sat, 26 Oct 2019 14:30:12 +1300
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Subject: Re: [v6ops] SLAAC renum: Problem Statement & Operational workarounds
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>>     Renumbering is not "common" but it certainly happens.
...> People imply it is a regular and routine event...

Sadly, it is. For example, at my previous apartment there was a badly waterproofed joint somewhere between me and the nearest street cabinet, so for months I frequently lost ADSL synch... and when it came back, I got new IPv6 prefix. After a heavy rainstorm, this would happen many times a day.

Yes, OK, there was a copper cable fault and it took <unmentionable company> many months to fix it. OK, maybe the ISP shouldn't regenerate a prefix every time. But that's real life and I suspect I am one of millions.

Regards
   Brian

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