Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-18 Thread Ole Troan
> "A host SHOULD select a "default gateway" for each prefix it uses to > obtain one of its own addresses. That router SHOULD be one of the > routers advertising the prefix in its RA. As a result of doing so, > when a host emits a datagram using a source address in one of those > prefixes

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-16 Thread Brian E Carpenter
On 16/08/2015 21:31, Steven Barth wrote: > Am 10.08.2015 um 19:28 schrieb Fred Baker (fred): >> In any event, I would urge the HNCP design team to consider the cases, and >> either make an argument that making network routing more complex (BCP 84) >> has a benefit I'm missing and actually works w

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-16 Thread Steven Barth
Am 10.08.2015 um 19:28 schrieb Fred Baker (fred): > In any event, I would urge the HNCP design team to consider the cases, and > either make an argument that making network routing more complex (BCP 84) has > a benefit I'm missing and actually works without the rule, or change HNCP to > not have

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-13 Thread Fred Baker (fred)
> On Aug 13, 2015, at 8:21 PM, Brian E Carpenter > wrote: > > I think all we have to do is delete 'on-link' in the second paragraph. > (The 'generally' in the first paragraph allows for the exceptional > case that Mikael was concerned about, I think.) I'll give people a couple of days to comme

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-13 Thread Brian E Carpenter
On 14/08/2015 14:46, Fred Baker (fred) wrote: > >> On Aug 13, 2015, at 7:37 PM, Brian E Carpenter >> wrote: >> >> So I think the -01 draft is wrong, since it says "on-link." > > What is says is > >A host receives prefixes in a Router Advertisement [RFC4861], which >goes on to identify

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-13 Thread Fred Baker (fred)
> On Aug 13, 2015, at 7:37 PM, Brian E Carpenter > wrote: > > So I think the -01 draft is wrong, since it says "on-link." What is says is A host receives prefixes in a Router Advertisement [RFC4861], which goes on to identify whether they are usable by SLAAC [RFC4862] [RFC4941] [RFC7

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-13 Thread Brian E Carpenter
On 13/08/2015 17:23, Mikael Abrahamsson wrote: > On Thu, 13 Aug 2015, Brian E Carpenter wrote: > >>> I still don't understand what a host with an IA_NA or IA_PD that isn't >>> covered by an on-link PIO should do with a packet sourced >>> from those IA_NA/IA_PD addresses. Yes, I do believe this to

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-13 Thread Mikael Abrahamsson
On Wed, 12 Aug 2015, Ole Troan wrote: Mikael, in the land of contrived examples! :-) this working groups answer to the below is make this a homenet and run HNCP. then the host rule enhancement isn’t used. in any case let me try to reply below, although I’m quite confused about the example.

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Mikael Abrahamsson
On Thu, 13 Aug 2015, Brian E Carpenter wrote: I still don't understand what a host with an IA_NA or IA_PD that isn't covered by an on-link PIO should do with a packet sourced from those IA_NA/IA_PD addresses. Yes, I do believe this to be a very valid case. I think we're saying: there needs t

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Brian E Carpenter
Below... On 13/08/2015 06:42, Mikael Abrahamsson wrote: > On Wed, 12 Aug 2015, Ole Troan wrote: > >>> For DHCPv6 these contraints do not apply anymore. That's what I'm trying to >>> figure out, how do we handle these IA_NAs and >>> IA_PDs that are not within an on-link RA being sent for that pref

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Ole Troan
Mikael, >>> For DHCPv6 these contraints do not apply anymore. That's what I'm trying to >>> figure out, how do we handle these IA_NAs and IA_PDs that are not within an >>> on-link RA being sent for that prefix. >> >> I take it IA_PD was included above by mistake. > > No. an IA_PD prefix is by

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Ole Troan
Mikael, in the land of contrived examples! :-) this working groups answer to the below is make this a homenet and run HNCP. then the host rule enhancement isn’t used. in any case let me try to reply below, although I’m quite confused about the example. >> two PIO’s of different length on the li

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Mikael Abrahamsson
On Wed, 12 Aug 2015, Ole Troan wrote: For DHCPv6 these contraints do not apply anymore. That's what I'm trying to figure out, how do we handle these IA_NAs and IA_PDs that are not within an on-link RA being sent for that prefix. I take it IA_PD was included above by mistake. No. This is

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Ole Troan
Mikael, >> Ole, Mikael, could either of you please summarise the discussion you're >> having for us mere mortals? I don't understand what problem you're trying >> to solve, and I don't understand why you're distinguishing between SLAAC and >> DHCPv6. > > Because a DHCPv6 IA_NA and DHCPv6 IA_P

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Ole Troan
Juliusz, >>> “In SA, DA, NH selection, prefer the NH that has advertised a PIO >>> covering the SA” > > It took me a while to decode that. If anyone else is as stupid as I am, > here's the translation > > When selecting the (source, destination, next-hop) triple among > available routes for a

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Fred Baker (fred)
> On Aug 12, 2015, at 5:44 AM, Juliusz Chroboczek > wrote: > > Ole, Mikael, could either of you please summarise the discussion you're > having for us mere mortals? I don't understand what problem you're trying > to solve, and I don't understand why you're distinguishing between SLAAC > and DH

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Mikael Abrahamsson
On Wed, 12 Aug 2015, Juliusz Chroboczek wrote: Ole, Mikael, could either of you please summarise the discussion you're having for us mere mortals? I don't understand what problem you're trying to solve, and I don't understand why you're distinguishing between SLAAC and DHCPv6. Because a DHC

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Mikael Abrahamsson
On Wed, 12 Aug 2015, Ole Troan wrote: two PIO’s of different length on the link sounds like a configuration error. Then I must still be missing something. Example time: A B+-+F + + | | ++-++ | | + + C D

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Juliusz Chroboczek
>> “In SA, DA, NH selection, prefer the NH that has advertised a PIO >> covering the SA” It took me a while to decode that. If anyone else is as stupid as I am, here's the translation When selecting the (source, destination, next-hop) triple among available routes for a given destination pr

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Ole Troan
Mikael, > Your document describes (in my opinion) desireable behaviour for devices > going forward. I would like to see text for DHCPv6 as well, both IA_NA > and IA_PD, if the same kind of behaviour can work there somehow. This is > out of scope for homenet though. t

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Mikael Abrahamsson
On Wed, 12 Aug 2015, Ole Troan wrote: Mikael, Your document describes (in my opinion) desireable behaviour for devices going forward. I would like to see text for DHCPv6 as well, both IA_NA and IA_PD, if the same kind of behaviour can work there somehow. This is out of scope for homenet tho

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-12 Thread Ole Troan
Mikael, >>> Your document describes (in my opinion) desireable behaviour for devices >>> going forward. I would like to see text for DHCPv6 as well, both IA_NA and >>> IA_PD, if the same kind of behaviour can work there somehow. This is out of >>> scope for homenet though. >> >> the rule appli

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-11 Thread Mikael Abrahamsson
On Tue, 11 Aug 2015, Ole Troan wrote: Your document describes (in my opinion) desireable behaviour for devices going forward. I would like to see text for DHCPv6 as well, both IA_NA and IA_PD, if the same kind of behaviour can work there somehow. This is out of scope for homenet though. the

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-11 Thread Ole Troan
> Your document describes (in my opinion) desireable behaviour for devices > going forward. I would like to see text for DHCPv6 as well, both IA_NA and > IA_PD, if the same kind of behaviour can work there somehow. This is out of > scope for homenet though. the rule applies regardless of how th

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-10 Thread Ole Troan
Fred, Add another LAN interface to Alice, connecting host Porky. If Alice didn’t advertise both ISP-Alice and ISP-Bob prefixes, Porky couldn’t use ISP Bob. It would be a quite complicated set of rules determining when Alice should or should not include ISP Bob’s prefixes on a given link. I’m qui

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-10 Thread Fred Baker (fred)
> On Aug 10, 2015, at 12:02 PM, Juliusz Chroboczek > wrote: > > I'm not sure if I read you right, but I assume you are concerned about > what happens when a delegated prefix is retraceted. (The ISP stops the > delegation, or the DHCPv6-PD client decides to hide the prefix from the > rest of th

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-10 Thread james woodyatt
On Aug 10, 2015, at 10:28, Fred Baker (fred) wrote: > > If every router is responsible to announce prefixes from ISP-Alice and > ISP-Bob on every LAN, then Spanky has a distinct probability that, to get a > packet to ISP-Alice, it will send it to ISP-Bob, who will then have to > redirect it to

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-10 Thread Juliusz Chroboczek
> The second issue, and this one I'm unsure about but raise in case there > is an issue, has to do with the process of removing a prefix from > a network. It seems likely that we have a counterpart to RIP's > count-to-infinity problem, except that there is no counter to rely > on. If a router adver

Re: [homenet] I-D Action: draft-baker-6man-multi-homed-host-00.txt

2015-08-10 Thread Fred Baker (fred)
https://tools.ietf.org/html/draft-baker-6man-multi-homed-host-00 Something that homenet, and specifically HNCP, might be interested to consider is the impact of egress/SADR routing as discussed in this draft on its recommendations. The draft is in WGLC and in need of a revised draft, so you may