Hi Ben, This is also something we have been investigating recently. We have found that CPE support for transition technologies is pretty limited outside of WRT.
I also have concerns about gaming support. I don’t believe any of the current generation of consoles support IPv6 for their services. I did a quick experiment a few weeks ago and found that none of the popular gaming services on PC (steam, uplay, epic) support v6 only. VoIP too is another service which concerns me. I think the only way to be certain about the impact of these technologies is a trial. We are looking to run one in the next few months. I would be interested also to hear of any real world deployments and the support impact that they have. Regards, Dave On Sat, 19 Dec 2020 at 15:44, Ben McKeegan <[email protected]> wrote: > Dear UKNOF, > > I have been asked to evaluate the feasibility of deploying lw4over6 with > IPv4 address sharing as an entry level option over an existing and > growing dual-stacked altnet, primarily for new residential customers. > > My google foo is failing me on this one as I am struggling to find any > reports within the last few years as to how nicely various consumer > applications and devices play behind a shared IPv4 address, where each > subscriber is allocated a fixed sub-range of ports. For example, one > area I am aware of which can present a problem with CG-NATs is the use > of games consoles for online multiplayer gaming, however, I am unsure to > what extent this can now be mitigated by enabling IPv6 on the consoles > and/or moving all the NAT to the CPE to give the user full control of > port forwarding (within their restricted range) and to avoid the > double-NAT. > > Before I put in a budget request for a large selection of games > consoles, online gaming subscriptions and other consumer devices to go > in my test lab, which will no doubt raise a few questioning eyebrows in > the finance department :-), I was wondering if anybody on this list had > any operational experience of running lw4over6 or similar technologies > such as MAP-E/MAP-T on a residential network, and would be willing to > share their experiences of what is and isn't likely to work. What > proportion of a typical residential user base are likely to be adversely > affected by IP address sharing? Can anybody point me to any recent > studies on this sort of thing? > > I also wonder to what extent we might be able to automatically detect > and mitigate the common problematic use cases, by flagging such > subscriber accounts as candidates for upgrade to dedicated IPv4 addresses. > > Many thanks, > Ben. > > -- > Ben McKeegan > Netservers Limited > > > >
