[afnog] Network termination point

[jordi.palet at consulintel.es]

Hi,

If I recall correctly, one of the major “offenders” recommending disabling IPv6 was Ubisoft. I’m sure is easy to google for that and see that other software/hardware vendors did similar recommendations, while for example Microsoft, clearly states that you should not do that, even if you don’t use/have IPv6 from your ISP.

The reality is that most of the networking stacks aren’t “dual” but hybrid, and some local functions or automatic Microsoft features, rely on IPv6 encapsulated in IPv4.

The other issue that is also easy to track with google (or your preferred search tool) is users and ISPs complaining since over 10 years ago, that Sony PlayStation Network blocks entire IPv4 ranges used in NAT444 (CGN). Other service provides did similar blockings, but PSN is the major offender and the one that cause more trouble. Up to now, once they block your ranges, they are blocked forever, unless anything changed recently.

Regarding misinformation about IPv6 vs IPv4 with NAT (including the false belief NAT=security), and similar ones, there is the RFC4864 trying to clarify that. This document is a bit old (2007) and I volunteered to work on an updated version. Probably I will be able to publish a first version next month.

What is obvious is that IPv4 public addresses are also globally routable, the difference is that you have (typically) a single address for your entire network because NAT, and that one also reveals the location of the full network and affiliation. Fingerprinting devices and hints of who may be the user behind it, is easier to do based on many other aspects than IP addresses.

Regards,
Jordi

@jordipalet

> El 10 jul 2026, a las 18:06, sm+afrinic at elandsys.com escribió:
> 
> Hi Jordi,
> 
> I went to https://chat.mistral.ai/chat and asked it: "how are citations used in documents?"  One of the reasons it given for using citations was to back up claims or recommendations.
> 
> I was curious about the gaming problem which you commented on in a previous email.  I did a quick search on https://duckduckgo.com/ One of the search results was to a whitepaper from Huawei [1].  An operator was using SRv6+ slicing technology to increase service revenue according to the whitepaper.  The whitepaper stated that there was a proof of concept.  There wasn't any citation to back that claim.  I did another search to find out whether the slicing technology was in commercial use.  There wasn't any search results with relevant information.  My conclusion is that the slicing technology did not increase service revenue in that market.  It may be different in other markets.
> 
> I read a 2026 situational analysis report written by Masterspace Solutions Ltd.  It stated that "IPv6 is globally routable and permanently reveals device location and network affiliation creating security concerns".  There wasn't any citation to back that claim.
> 
> Regards,
> S. Moonesamy
> 
> 1. https://www.elandsys.com/r/00216
> 


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