Re: [v6ops] SLAAC renum: Problem Statement & Operational workarounds
Philip Homburg <pch-v6ops-9@u-1.phicoh.com> Wed, 23 October 2019 15:08 UTC
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From: Philip Homburg <pch-v6ops-9@u-1.phicoh.com>
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In-reply-to: Your message of "Wed, 23 Oct 2019 03:51:32 -0500 ." <85b1ef40-f107-0ece-3e71-377f4d22dd46@si6networks.com>
Date: Wed, 23 Oct 2019 17:08:15 +0200
Archived-At: <https://mailarchive.ietf.org/arch/msg/v6ops/jT6XPChoyEdDUPsbzujDxH7bXQw>
Subject: Re: [v6ops] SLAAC renum: Problem Statement & Operational workarounds
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>The document is available at: >https://tools.ietf.org/html/draft-gont-v6ops-slaac-renum I think this is an important subject that is worth fixing. In this reply I'll focus on the preferred and valid lifetimes. On a host, the preferred and valid lifetimes play quite different roles. The preferred lifetime plays a role in setting up new flows. I.e. if the application does not provide a source address then the IPv6 layer uses the preferred lifetime to select the best source address among multiple candidates. Mistakenly setting the preferred lifetime of an address to zero may cause problems for new flows but has no impact on existing flows In contrast setting the valid lifetime to zero immediately signals an error condition to existing flows. This could cause a lot of trouble for long lived flows. The other side of the coin is that if a host ends up with stale prefixes, then the user maybe willing to wait for a few minutes for the situation to resolve itself, but probably not much longer. So the suggestion that AdvPreferredLifetime: AdvDefaultLifetime is likely not sufficient to be responsive to a user. And at the same time AdvValidLifetime: 1.5 * AdvDefaultLifetime is very risky if AdvDefaultLifetime is low. Note that RFC 4861 allows MaxRtrAdvInterval to be a low as 4 seconds, AdvDefaultLifetime can be as low as MaxRtrAdvInterval, so also 4 seconds. This creates a very fragile system. At the same time, AdvDefaultLifetime is commonly 1800 seconds. Which is way too long to wait for stale information to expire. I agree that valid and preferred lifetimes of resp. 30 days and 7 days are excessive. But I'm not at all convinced that tying them to AdvDefaultLifetime will have a positive effect. I'm also not convinced that there are sensible values for these lifetimes that are robust enough and at the same time responsive enough to deal with the issue at hand. Reducing the lifetimes would help against build up of stale prefixes. If they are set to a couple of hours.
- [v6ops] SLAAC renum: Problem Statement & Operatio… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Alexandre Petrescu
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Trevor Warwick
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Eric Vyncke (evyncke)
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… JORDI PALET MARTINEZ
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Alexandre Petrescu
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Brian E Carpenter
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Alexandre Petrescu
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Alexandre Petrescu
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Gert Doering
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Clark Gaylord
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Nick Hilliard
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Richard Patterson
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Brian E Carpenter
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Brian E Carpenter
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Nick Hilliard
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Brian E Carpenter
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Bernie Volz (volz)
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Kristian McColm
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Jen Linkova
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Brian E Carpenter
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Jen Linkova
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Jen Linkova
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Philip Homburg
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Timothy Winters
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Nick Hilliard
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Timothy Winters
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Timothy Winters
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Bernie Volz (volz)
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… JORDI PALET MARTINEZ
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Bernie Volz (volz)
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Bernie Volz (volz)
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Radu-Adrian Feurdean
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Alexandre Petrescu
- [v6ops] A broken promise - "You said PD Prefix Va… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Alexandre Petrescu
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Alexandre Petrescu
- Re: [v6ops] A broken promise - "You said PD Prefi… Naveen Kottapalli
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Radu-Adrian Feurdean
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Bernie Volz (volz)
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Mark Smith
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] A broken promise - "You said PD Prefi… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] A broken promise - "You said PD Prefi… Sander Steffann
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fernando Gont
- Re: [v6ops] A broken promise - "You said PD Prefi… Philip Homburg
- Re: [v6ops] A broken promise - "You said PD Prefi… Ole Troan
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Mark Smith
- Re: [v6ops] A broken promise - "You said PD Prefi… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] A broken promise - "You said PD Prefi… sthaug
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Ole Troan
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Bernie Volz (volz)
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Bernie Volz (volz)
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Ole Troan
- Re: [v6ops] A broken promise - "You said PD Prefi… Fernando Gont
- Re: [v6ops] A broken promise - "You said PD Prefi… Bernie Volz (volz)
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Ole Troan
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Fred Baker
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Bernie Volz (volz)
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] A broken promise - "You said PD Prefi… Owen DeLong
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] A broken promise - "You said PD Prefi… Owen DeLong
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] A broken promise - "You said PD Prefi… sthaug
- Re: [v6ops] A broken promise - "You said PD Prefi… Owen DeLong
- Re: [v6ops] A broken promise - "You said PD Prefi… Philip Homburg
- Re: [v6ops] A broken promise - "You said PD Prefi… Owen DeLong
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Bernie Volz (volz)
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Alexandre Petrescu
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Alexandre Petrescu
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Alexandre Petrescu
- Re: [v6ops] SLAAC renum: Problem Statement & Oper… Owen DeLong
- Re: [v6ops] A broken promise - "You said PD Prefi… Fernando Gont
- Re: [v6ops] A broken promise - "You said PD Prefi… Ole Troan
- Re: [v6ops] A broken promise - "You said PD Prefi… Ole Troan
- Re: [v6ops] A broken promise - "You said PD Prefi… Fernando Gont
- Re: [v6ops] A broken promise - "You said PD Prefi… Alexandre Petrescu
- Re: [v6ops] A broken promise - "You said PD Prefi… Philip Homburg
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Mark Smith
- Re: [v6ops] A broken promise - "You said PD Prefi… Fernando Gont
- Re: [v6ops] A broken promise - "You said PD Prefi… Mark Smith
- Re: [v6ops] A broken promise - "You said PD Prefi… Philip Homburg
- Re: [v6ops] A broken promise - "You said PD Prefi… Philip Homburg
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Richard Patterson
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Richard Patterson
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Mark Smith
- Re: [v6ops] A broken promise - "You said PD Prefi… Ted Lemon
- Re: [v6ops] A broken promise - "You said PD Prefi… Mark Smith
- Re: [v6ops] A broken promise - "You said PD Prefi… Ole Troan
- Re: [v6ops] A broken promise - "You said PD Prefi… Mark Andrews
- Re: [v6ops] A broken promise - "You said PD Prefi… Fernando Gont
- Re: [v6ops] A broken promise - "You said PD Prefi… Fernando Gont
- [v6ops] What problem are we trying to solve? (Re:… Mark Smith
- Re: [v6ops] A broken promise - "You said PD Prefi… Owen DeLong
- Re: [v6ops] A broken promise - "You said PD Prefi… Owen DeLong
- Re: [v6ops] What problem are we trying to solve? … Tassos Chatzithomaoglou
- Re: [v6ops] What problem are we trying to solve? … Fernando Gont
- Re: [v6ops] What problem are we trying to solve? … Fernando Gont
- Re: [v6ops] What problem are we trying to solve? … Tassos Chatzithomaoglou
- Re: [v6ops] What problem are we trying to solve? … Mark Smith
- Re: [v6ops] What problem are we trying to solve? … Fred Baker
- Re: [v6ops] What problem are we trying to solve? … Tassos Chatzithomaoglou
- Re: [v6ops] What problem are we trying to solve? … Richard Patterson
- Re: [v6ops] What problem are we trying to solve? … Ted Lemon
- Re: [v6ops] What problem are we trying to solve? … Ted Lemon
- Re: [v6ops] What problem are we trying to solve? … Tassos Chatzithomaoglou
- Re: [v6ops] What problem are we trying to solve? … Ted Lemon
- Re: [v6ops] What problem are we trying to solve? … Ole Troan