nanog mailing list archives
Re: IPv6 Pain Experiment
From: Doug Barton <dougb () dougbarton us>
Date: Fri, 4 Oct 2019 10:10:27 -0700
On 10/4/19 7:45 AM, Warren Kumari wrote:
On Fri, Oct 4, 2019 at 5:13 AM Masataka Ohta <mohta () necom830 hpcl titech ac jp> wrote:Doug Barton wrote:And even if you do need to change providers, once you have your addressing plan in place all you have to change is the prefix.This is the same as saying "If you need to change providers in IPv4, once you have your addressing plan in place all you have to do is change the prefix", or "To build the Eiffel Tower, all you have to do is bolt bits of metal together" -- it's technically correct*, but handwaves away the actual complexity and scale of work. Yes, you (clearly) can renumber v6 networks, and it's *probably* easier than renumbering v4, but "just change the prefix" oversells it.
I was assuming that this audience understands the relative complexity of changing the network parts of the address, and leaving the subnet and host parts in place.
And by and large, it is not true that you can do this with IPv4. You might occasionally get lucky with it, but that would be the exception, not the rule.
As for your Eiffel Tower example, the design and architecture are the pieces that would already be in place as part of your networking plan, so in a sense we're talking about RE-building the Eiffel Tower by taking off one bit of metal (the old network) and bolting another piece in its place. Not building it all over again from scratch.
So you can credibly accuse me of underselling the renumbering effort, but don't engage in hyperbole to try to balance the scales.
Renumbering has its pain points regardless of the protocol, but if you've designed your network correctly IPv6 renumbering is considerably easier than it is in IPv4.
Doug
Current thread:
- Re: IPv6 Pain Experiment, (continued)
- Re: IPv6 Pain Experiment Masataka Ohta (Oct 03)
- Re: IPv6 Pain Experiment John Levine (Oct 03)
- Re: IPv6 Pain Experiment Masataka Ohta (Oct 03)
- Re: IPv6 Pain Experiment Mark Andrews (Oct 03)
- Re: IPv6 Pain Experiment Masataka Ohta (Oct 03)
- Re: IPv6 Pain Experiment Doug Barton (Oct 03)
- Re: IPv6 Pain Experiment Masataka Ohta (Oct 03)
- Re: IPv6 Pain Experiment Doug Barton (Oct 03)
- Re: IPv6 Pain Experiment Masataka Ohta (Oct 04)
- Re: IPv6 Pain Experiment Warren Kumari (Oct 04)
- Re: IPv6 Pain Experiment Doug Barton (Oct 04)
- Re: IPv6 Pain Experiment tim () pelican org (Oct 04)
- Re: IPv6 Pain Experiment Matt Harris (Oct 04)
- Re: IPv6 Pain Experiment Masataka Ohta (Oct 04)
- Re: IPv6 Pain Experiment Seth Mattinen (Oct 03)
- Re: IPv6 Pain Experiment Mark Andrews (Oct 03)
- Re: IPv6 Pain Experiment Seth Mattinen (Oct 03)
- Re: IPv6 Thought Experiment Antonios Chariton (Oct 02)