On Wed, Mar 14, 2018 at 7:56 PM, Thiago Macieira <thiago.macie...@intel.com> wrote:
> On Wednesday, 14 March 2018 15:57:00 PDT Gregg Reynolds wrote: > > > You do realise Bluetooth 5 did standardise IPv6-over-Bluetooth too, > right? > > > > No (for the record). No, afaik, those are completely separate issues. > > https://tools.ietf.org/html/rfc7668. IPv6 Bluetooth preceded bt5. > > BT has had IPSP support for some time. BT5 adopted the 6LoWPAN header > compression, so "6lo-over-btle" + Bluetooth Mesh is the new technique that > you're looking for. > > > Bt5 and bt over ipv6 are completely orthogonal, afaik. > > Not entirely. 6lo-over-btle didn't exist before BT5 Hate to be a nudge, but but for the record, Oct 2016: RFC 7668, IPv6 over BLUETOOTH(R) Low Energy http:// tools.ietf.org/html/rfc7668 says " This document describes how IPv6 is transported over Bluetooth low energy using IPv6 over Low-power Wireless Personal Area Network (6LoWPAN) techniques." (Bonus points to anybody who can explain what "IPv6 is transported .. using IPv6..." means.) BT5 was released in Dec. 2016 (https://www.bluetooth.com/specifications/bluetooth-core-specification) As I unnerstand it, anyway, IPv6 support is not a requirement for BT5. A BT5 network could get along just fine without IPv6. It follows that an OCF network should be able to get along just fine without IPv6. After all, the point of OCF (as I understand it) is the application layer. > > An application layer cannot (should not) require lower levels. > > Welcome to the real world :-) > > Ideally, you'd be right. In practice, that simply doesn't work. Why not? > And besides, > the requirement is not in the OCF protocol, it's in the OCF certification. > Ah, well, that's for the market to decide. Certification could well turn out to be largely irrelevant, at least for some markets. Nobody every "certified" an HTTP server, and look what has happened. ... > Though the OSI model does not map strictly to reality either. Bluetooth is > L1 > and L2, but the upper half of L2 (MAC) leaks to the layer above (IP) with > IPv6. > Mapping BT too OSI or vice-versa - ouch! > -- > Thiago Macieira - thiago.macieira (AT) intel.com > Software Architect - Intel Open Source Technology Center > > > >
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