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Re: [v6ops] A common problem with SLAAC in "renumbering" scenarios

Philip Homburg <pch-ipv6-ietf-6@u-1.phicoh.com> Thu, 28 February 2019 12:29 UTC

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To: ipv6@ietf.org
Subject: Re: [v6ops] A common problem with SLAAC in "renumbering" scenarios
From: Philip Homburg <pch-ipv6-ietf-6@u-1.phicoh.com>
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References: <6D78F4B2-A30D-4562-AC21-E4D3DE019D90@consulintel.es> <20190220113603.GK71606@Space.Net> <28fbc2c305c640c9afb3704050f6e8d7@boeing.com> <20190220213107.GS71606@Space.Net> <019c552eb1624d348641d6930829fd1f@boeing.com> <CAKD1Yr0HBG+rhyFWg9zh0t3mW486Mjx9umjn+CRqAZg4z9r0dg@mail.gmail.com> <20190221073530.GT71606@Space.Net> <CAO42Z2wmB2W52b4MZ2h9sW5E9cQKm-HRjyf--q8C26jezS7LXQ@mail.gmail.com> <a73818d31db7422b99a524bc431b00ed@boeing.com> <CAO42Z2z9-48Gbb_Exf+oWUqDO=axSLpZBtqeDcxkAoFq5OziGw@mail.gmail.com> <CALx6S3624hnGauG1HaSWPMvQw0t2Q5R3gb8W4R8w3kuK7dcrWQ@mail.gmail.com> <1F07F2BB-2F37-4D12-9731-7892DF4E3D88@consulintel.es> <0a582916-af14-bd82-a4cd-002a36f8830b@huitema.net> <67515a73-26a5-3ed0-da88-1a4ce64550d3@foobar.org> <360afa02-cf23-375c-4876-780d3c2aa5ac@gont.com.ar> <CAHL_VyD34V=TRcsCp0DOO9HJNHyy5xkiMQ_cZoBa7zTE4fe5OA@mail.gmail.com> <ead01e0a-9211-7944-88d6-ae8d037c03a8@si6networks.com> <FB8B77EE-CC16-4418-BB5E-D44EE66D6B72@jisc.ac.uk> <29dcc6ed-03f6-3ead-6866-eecbefdf 1483@si6networks.com> <899A1249-D3D9-4824-8B2E-7E950FBB316A@jisc.ac.uk> <m1gya2p-0000HVC@stereo.hq.phicoh.net> <F0CD8E69-4ACD-4FB6-8797-B4D635CA229D@gmail.com>
In-reply-to: Your message of "Wed, 27 Feb 2019 18:09:14 -0800 ." <F0CD8E69-4ACD-4FB6-8797-B4D635CA229D@gmail.com>
Date: Thu, 28 Feb 2019 13:29:20 +0100
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>Which might make sense if you have exactly one ISP....

I think the common case in home networks and probably also lots of small
business is to have one ISP.

In any case, my point was that if your internal network connectivity depends
on a prefix from an external party then you want relatively long
lifetimes.

If instead your internal network connectivity is based on ULA, then there is
no real need to worry about losing all external prefixes.

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