Re: [v6ops] How do you solve 3GPP issue if neither operator nor handset supports PD?
otroan@employees.org Tue, 24 November 2020 14:50 UTC
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Subject: Re: [v6ops] How do you solve 3GPP issue if neither operator nor handset supports PD?
From: otroan@employees.org
In-Reply-To: <m1khZLr-0000IXC@stereo.hq.phicoh.net>
Date: Tue, 24 Nov 2020 15:50:14 +0100
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To: Philip Homburg <pch-ipv6-ietf-6@u-1.phicoh.com>
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Philip, >> Neither do any implementation I'm aware do that. >> To be clear. If a link-type has no L2 address / is point to point, then >> no implementation I've touched does ND address resolution. >> It would be happy to respond to a NUD message. > > ND answers two questions, what is the L2 address of an address and is the > remote node alive. ND has many functions. One is address resolution and another is NUD (neighbor unreachability detection). They use the same messages but have distinct functions. > So from my point of view it is obvious to just send an NS, mark the neighbor > cache as incomplete until you get an NA back. Then you know that neighbor > is alive. If you have a neighbor cache for neighbors for p2p links. > Now, I wouldn't mind if other implementations would not send the NS and > just assume that their neighbors are alive. > > However I found that most sutff just doesn't reply with an NA at all. Right. While NUD isn't a particularly effective keepalive/link state detection mechanism I would expect it to be supported. >> The current behaviour of 64share does that (and gets the hack label >> for that reason). What I'm saying is that 64share (and what I >> propose in p2p ethernet) is a lot closer to PD than it is to address >> assignment. As soon as you stop thinking that a p2p link has a >> shared subnet, that's where you end up. > > From a 'bits on the wire' point of view, there is nothing magic to PD. > It is just a message that says: here is prefix, you can do with it as you > see fit. > > The devil is in the details. What if the down stream router then hands out > the prefix using DHCPv6 PD. Do we need to do anything special for homenet? > (I guess doing PD using RA would actually be the 3rd version of PD, because > homenet also does prefix delegation). no, I can't see that the protocol external to the homenet matters. homenet does not do prefix delegation. homenet does prefix assignment. > If we want this to work on ethernet, we may have to say something specific, > like 'a route will be installed that points to the (link local) source > address of the RS'. Which I guess implies that an RA with a PDIO can only > be sent in response to an RS (on ethernet). Then, what do we do on p2p links. p2p links are simple. my proposal is also to treat Ethernet as a P2P link. But otherwise, yes, you would have to install the route with the LL as NH. The biggest difference I see between DHCP PD and something we might do in RA is the coupling between interface state and prefix. DHCPv6 PD is essentially a fax-replacement. A delegation is independent of the upstream link-state, and in theory also which interface the delegation was received on. Although the realities of routing quickly sets in. If in RA the delegation's lifetime is restricted by the link-state/lifetime of RA, then that will have significant issues for downstream hosts/applications. Cheers, Ole
- How do you solve 3GPP issue if neither operator n… Gyan Mishra
- Re: [v6ops] How do you solve 3GPP issue if neithe… Mikael Abrahamsson
- Re: [v6ops] How do you solve 3GPP issue if neithe… Gyan Mishra
- Re: [v6ops] How do you solve 3GPP issue if neithe… Alexandre Petrescu
- RE: [EXTERNAL] How do you solve 3GPP issue if nei… Manfredi (US), Albert E
- Re: [v6ops] How do you solve 3GPP issue if neithe… Lorenzo Colitti
- Re: [v6ops] How do you solve 3GPP issue if neithe… Erik Kline
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… otroan
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… otroan
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Lorenzo Colitti
- Re: [v6ops] How do you solve 3GPP issue if neithe… Mikael Abrahamsson
- Re: [v6ops] How do you solve 3GPP issue if neithe… otroan
- RE: [v6ops] How do you solve 3GPP issue if neithe… Vasilenko Eduard
- Re: [v6ops] How do you solve 3GPP issue if neithe… Eric Vyncke (evyncke)
- RE: [v6ops] How do you solve 3GPP issue if neithe… Pascal Thubert (pthubert)
- p2p interfaces (Re: [v6ops] How do you solve 3GPP… Jared Mauch
- Re: p2p interfaces (Re: [v6ops] How do you solve … Mikael Abrahamsson
- Re: p2p interfaces (Re: [v6ops] How do you solve … Jared Mauch
- Re: p2p interfaces (Re: [v6ops] How do you solve … otroan
- Re: p2p interfaces (Re: [v6ops] How do you solve … Eric Vyncke (evyncke)
- RE: [v6ops] How do you solve 3GPP issue if neithe… Pascal Thubert (pthubert)
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… otroan
- Re: [v6ops] How do you solve 3GPP issue if neithe… Alexandre Petrescu
- RE: [v6ops] How do you solve 3GPP issue if neithe… Vasilenko Eduard
- RE: [v6ops] How do you solve 3GPP issue if neithe… Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Alexandre Petrescu
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- RE: [EXTERNAL] Re: [v6ops] How do you solve 3GPP … Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Alexandre Petrescu
- Re: [v6ops] How do you solve 3GPP issue if neithe… Alexandre Petrescu
- Re: [v6ops] How do you solve 3GPP issue if neithe… Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Alexandre Petrescu
- RE: [v6ops] How do you solve 3GPP issue if neithe… David Allan I
- Re: [EXTERNAL] Re: [v6ops] How do you solve 3GPP … Philip Homburg
- Re: [EXTERNAL] Re: [v6ops] How do you solve 3GPP … Ole Troan
- RE: [v6ops] How do you solve 3GPP issue if neithe… Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Lorenzo Colitti
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- RE: [EXTERNAL] Re: [v6ops] How do you solve 3GPP … Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… tom petch
- RE: [EXTERNAL] Re: [v6ops] How do you solve 3GPP … Templin (US), Fred L
- RE: [v6ops] How do you solve 3GPP issue if neithe… Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Michael Richardson
- RE: [v6ops] How do you solve 3GPP issue if neithe… Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Mark Smith
- Re: [v6ops] How do you solve 3GPP issue if neithe… Michael Richardson
- Re: p2p interfaces (Re: [v6ops] How do you solve … Jen Linkova
- Re: [v6ops] How do you solve 3GPP issue if neithe… Alexandre Petrescu
- Re: [EXTERNAL] Re: [v6ops] How do you solve 3GPP … Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Michael Richardson
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Ole Troan
- Re: [v6ops] How do you solve 3GPP issue if neithe… Mark Smith
- Re: [v6ops] How do you solve 3GPP issue if neithe… Michael Richardson
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… otroan
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Nick Hilliard
- Re: [v6ops] How do you solve 3GPP issue if neithe… Lorenzo Colitti
- Re: [v6ops] How do you solve 3GPP issue if neithe… Nick Hilliard
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… otroan
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Alexandre Petrescu
- Re: [v6ops] How do you solve 3GPP issue if neithe… Michael Richardson
- Re: [v6ops] How do you solve 3GPP issue if neithe… otroan
- RE: [EXTERNAL] Re: [v6ops] How do you solve 3GPP … Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… otroan
- Re: [EXTERNAL] Re: [v6ops] How do you solve 3GPP … Philip Homburg
- RE: [EXTERNAL] Re: [v6ops] How do you solve 3GPP … Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [EXTERNAL] Re: [v6ops] How do you solve 3GPP … Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Philip Homburg
- Re: [v6ops] How do you solve 3GPP issue if neithe… Templin (US), Fred L
- RE: [v6ops] How do you solve 3GPP issue if neithe… Templin (US), Fred L
- RE: [v6ops] How do you solve 3GPP issue if neithe… Templin (US), Fred L
- Re: [v6ops] How do you solve 3GPP issue if neithe… Alexandre Petrescu