Re: [v6ops] Flash renumbering

[Fernando Gont <[e-mail]>]

On 16/9/20 12:55, Vasilenko Eduard wrote:
> Hi Fernando,
> I do not believe that other cases are representative except many-box solution.
> Because all other cases are: somebody forgotten to deprecate prefix in his software (including VM - just need to send at least one RA before prefix change).

All these things expose a stituation that is not robust. You are 
essentially arguing for brokenness.


> It was better to push Industry to properly develop software to deprecate prefixes, then to compromise timers.

What do you mean by "compromise timers"?



> For the multi-box scenario:
> 30% is the probability that residential subs have IPv6 (in reality less, 30% is mainly attributed by mobile)

Where do you get this numbers from?


> 37% that his Carrier do dynamic DHCP-PD
> 5% that he has 2 boxes in the household (reminder: relationships between number of businesses to households is about 2% for majority of countries, number of branches for big Enterprise could be big (+), but many SMBs would be satisfied by typical CPE(-))

Again where do you get this "5%". Do you just make it up?


And, anyway, the possibility is irrelevant. I don't think I need to 
point out that the use of range extenders and the like are not unusual. 
THat kind of thing works pretty well with IPv4, and could be very broken 
with IPv6.



> 50% that he is not capable to create routed network inside (/64 from Carrier - now should be less such cases compare to 2017).

Same here. WHere do you get these numbers for. Besides, in many cases, 
you *don't want* to have a subneted local network.


[...]
> In response to "why IP camera needs bridged network" you have answered "to avoid NAT".
> We are in IPv6 alias. Whatever you would do in IPv6 - you will avoid NAT. Hence, Routed network inside household is not a problem for IP camera. Right?

A subneted network breaks mDNS.



> I do not know mDNS - may be it needs bridged network. It would be additional extremely small corner case (10^-5).

huh? Most people access their home devices with technologies such as 
mDNS and LLMNR, which operate on a single segment. Because they are plug 
and ply without the need to set up a name server, or anything.

Thanks,
-- 
Fernando Gont
SI6 Networks
e-mail: [e-mail]
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