Re-, Please see inline. Cheers, Med De : Lorenzo Colitti [mailto:lorenzo@xxxxxxxxxx] On Tue, Sep 10, 2013 at 5:18 PM, <mohamed.boucadair@xxxxxxxxxx> wrote:
You don't need to support IPV4V6 if all you need to do is work on an IPv6-only network. [Med] UEs that will provided with IPv6-only or DS is up to the provider. Note also that the requirement is worded to let the decision to each provider. The document explicitly says: This allows each operator to select their own strategy regarding IPv6 introduction. Both IPv6 and IPv4v6 PDP- Contexts MUST be supported. IPv4, IPv6 or IPv4v6 PDP-Context request acceptance depends on the cellular network configuration. That might seem like a stupid answer, but the point I'm trying to make is that while you and I know that supporting only IPV6 will result in the phone being incompatible with some networks *the document doesn't say that*. The document says you MUST support all this stuff [Med] No. no, no the document indicates the language for each feature: there are MUST, SHOULD, etc. This is not the first time a document makes such classification of the features. , without saying why, and without giving any information to operators, implementers, or anyone else on why this particular laundry list of features was selected. [Med] There is already motivations text for most of features, rationale and scope of the overall effort in the draft. You are continuing ignore it. That’s not fair. That's not a good way to specify things. Look at RFC1122, for example: every requirement is carefully articulated, with rationale and everything else. [Med] This document is not a standard. This document does not ambition to have the same level as RFC1122.
Nobody can control third party-applications, not even the phone manufacturer (which is why REQ#33 doesn't make sense). [Med] There are API, there applications shipped by device vendors themselves, etc. Our teams already tested applications provided by vendors devices which are broken when IPv6-only mode. The manufacturer can provide something like 464xlat, which I agree is necessary for IPv6-only operation. [Med] Are you saying this is a MUST?
You don't need to do that if you have an APN database that's configured with what the operator supports, or if you don't support IPV4V6. (Straying back into technical discussion for a bit - from a technical point of view, having seen the wide variety of behaviours and result codes that basebands typically exhibit when you ask them to do something that they or the network doesn't support, I think relying on this fallback is a terrible idea.)
How many phones today support DNSSEC? [Med] How many device support IPv6 today? We can play that game endlessly...
This is not about IPv6-only mode. [Med] What is wrong in that text? Can we focus on the exact text change? That's a useful feature, and as I'm sure you know, it's been implemented by a number of manufacturers. Consider an implementation that implements IPv6 tethering without including a full RFC6204 IPv6 router with simple security, ULA, DHCPv6 PD, stateful DHCPv6 and all the bells and whistles built in. Or consider a 464xlat implementation without a local DNS64 implementation. [Med] You still do that. These features are not MUST in this document. It is your right to ignore them but you need to be aware this may have some negative impact. It seems you understand the list as MUST ones…while this is not true. I don't consider these to be degraded service, I consider them to be a lot better than what we have today. [Med] I’m sorry to say that a customer with IPv6-only connectivity that cannot use some applications available for an IPv4 customer is a degraded service. This is seen by some operators as a barrier for that mode. |