Re: Address privacy (was: Re: RFC4941bis: consequences of many addresses for the network)

[Warren Kumari <[e-mail]>]

On Sat, Jan 25, 2020 at 7:51 AM Jared Mauch <[e-mail]> wrote:
>
>
>
> > On Jan 25, 2020, at 7:45 AM, Ted Lemon <[e-mail]> wrote:
> >
> > I really like this way of thinking about the “anonymity set.”   I’ve been a bit obsessed with this problem for a while; I think that flat routing of a bazillion addresses is probably not an ideal solution, however, because in order to get real anonymity, you have to not reuse addresses, and so now you’re looking at a Carl Sagan worth of addresses (billions and billions) in the routing table.
>
> Not in the routing table.  You won’t have billions of routes in the RIB or FIB in the DFZ in my lifetime.
>
> Now what ND does to the local network is quite problematic but also has been discussed at length and we’ve seen that impact on wireless networks at IETF meetings.  The amount of broadcast/multicast background noise gets raised to much higher levels as a result and has practical operational considerations.
>
> One of the things the group may want to work on is finding the right thresholds and providing some operational guidance as a result.
>
> We did a similar experiment at a NANOG meeting with providing the venue network via the hotel and by having IPv6 on it caused the radio noise floor to raise significantly due to the broadcast(multicast) traffic it harmed the throughput of the network greatly.

... see the ietf-hotel network in Singapore as another example of
having to disable V6 because of the broadcast load.
https://datatracker.ietf.org/doc/draft-ietf-mboned-ieee802-mcast-problems/
talks about the interaction of broadcast/multicast on 802.11
networks...

W


>
> Operators need the network to function and will disable things until it does.
>
> - Jared
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-- 
I don't think the execution is relevant when it was obviously a bad
idea in the first place.
This is like putting rabid weasels in your pants, and later expressing
regret at having chosen those particular rabid weasels and that pair
of pants.
   ---maf