Re: IIDs, u and g bits, and 4rd

2012-12-18 Thread Joel M. Halpern
Phrased that way, I do not think any stack anywhere looks at the U or G its in a received IPv6 address. I have no problem if we declare hem to be irrelevant. Your, Joel On 12/18/2012 8:13 PM, Fred Baker (fred) wrote: As you know, the EUI-64 address is but one of the seeds that an EID can be

Re: IIDs, u and g bits, and 4rd

2012-12-18 Thread Fred Baker (fred)
As you know, the EUI-64 address is but one of the seeds that an EID can be generated from. Having been generated, it's a bit string, and another bit string either equals it or doesn't. You didn't answer my question. What, on an IPv6 host or router, cares about the g bit apart from the code that

Re: IIDs, u and g bits, and 4rd

2012-12-18 Thread Joel M. Halpern
As I understand it, the original intent with the U bit was to provide an easy way to create IID that were highly likely to be distinct from all other IIDs (on the link). As IEEE reserves the G bit, we marked that as special as well when the U bit was set. Changing the meaning of U=1, G=0 seem

Re: IIDs, u and g bits, and 4rd

2012-12-18 Thread Fred Baker (fred)
Why do we care about u and g in the first place? Is there code in an IPv6 router or host that interprets them? On Dec 18, 2012, at 3:50 PM, Joel M. Halpern wrote: > In reading the discussion,a nd trying to think through what I understand to > be correct, it seems that there is an unforeseen amb

IIDs, u and g bits, and 4rd

2012-12-18 Thread Joel M. Halpern
In reading the discussion,a nd trying to think through what I understand to be correct, it seems that there is an unforeseen ambiguity in the way the current documents about IPv6 IIDs are written. I think that there are two possible meanings, ad we should decide explicitly which one we want.

Re: AD Evaluation: draft-ietf-6man-ipv6-atomic-fragments

2012-12-18 Thread Fernando Gont
Hi, Brian, On 12/18/2012 01:32 PM, Brian Haberman wrote: >> Thanks so much for your feedback! -- Please find my comments inline... >> >> >> On 12/13/2012 03:57 PM, Brian Haberman wrote: >>> Substantive >>> >>> >>> * It would be quite useful to explicitly define "atomic fragment"

Re: AD Evaluation: draft-ietf-6man-ipv6-atomic-fragments

2012-12-18 Thread Fernando Gont
Hi, Fred, On 12/18/2012 04:13 PM, Templin, Fred L wrote: > I have a question about this document. Is a middlebox permitted > to fragment an "atomic" fragment before forwarding the packet > on to the next hop? If not, why not - after all, that's why the > host inserted the fragment header in the fi

RE: AD Evaluation: draft-ietf-6man-ipv6-atomic-fragments

2012-12-18 Thread Templin, Fred L
I have a question about this document. Is a middlebox permitted to fragment an "atomic" fragment before forwarding the packet on to the next hop? If not, why not - after all, that's why the host inserted the fragment header in the first place. If so, then shouldn't the draft say something about the

Re: 6MAN WG Last Call:

2012-12-18 Thread Brian E Carpenter
Yes, thanks. Regards Brian Carpenter On 18/12/2012 14:53, Fernando Gont wrote: > On 12/18/2012 11:35 AM, Brian E Carpenter wrote: >>> Agreed. What I meant in my response to Hosnieh is that these addresses >>> behave (in terms of lifetimes) in the same way as traditional slaac >>> addresses, bu

Re: AD Evaluation: draft-ietf-6man-ipv6-atomic-fragments

2012-12-18 Thread Brian Haberman
On 12/17/12 10:54 AM, Fernando Gont wrote: Hi, Brian, Thanks so much for your feedback! -- Please find my comments inline... On 12/13/2012 03:57 PM, Brian Haberman wrote: Substantive * It would be quite useful to explicitly define "atomic fragment" prior to using it in the d

Re: 6MAN WG Last Call:

2012-12-18 Thread Fernando Gont
On 12/18/2012 11:35 AM, Brian E Carpenter wrote: >> Agreed. What I meant in my response to Hosnieh is that these addresses >> behave (in terms of lifetimes) in the same way as traditional slaac >> addresses, but do not vary over time as RFC4941-addresses. >> >> So it's not clear to me what's the c

Re: 6MAN WG Last Call:

2012-12-18 Thread Brian E Carpenter
On 18/12/2012 14:40, Ole Troan wrote: >> The concern is that we are still mainly ignoring the renumbering >> problem, and in some years time this will be serious for users. >> But if you add "From the point of view of renumbering, these addresses >> behave like RFC4941 addresses" the point is cover

Re: 6MAN WG Last Call:

2012-12-18 Thread Ole Troan
> The concern is that we are still mainly ignoring the renumbering > problem, and in some years time this will be serious for users. > But if you add "From the point of view of renumbering, these addresses > behave like RFC4941 addresses" the point is covered. ... behave like RFC4862 addresses. c

Re: 6MAN WG Last Call:

2012-12-18 Thread Brian E Carpenter
On 18/12/2012 14:13, Fernando Gont wrote: > On 12/18/2012 10:55 AM, Ole Troan wrote: > Nobody even suggested that. For instance, if these addresses had a > lifetime (in the RFC4941 sense), they wouldn't be called "stable" in the > first place. I suggest that you add a discussion of

Re: 6MAN WG Last Call:

2012-12-18 Thread Fernando Gont
On 12/18/2012 10:55 AM, Ole Troan wrote: Nobody even suggested that. For instance, if these addresses had a lifetime (in the RFC4941 sense), they wouldn't be called "stable" in the first place. >>> >>> I suggest that you add a discussion of site renumbering considerations. >>> The pr

Re: 6MAN WG Last Call:

2012-12-18 Thread Ole Troan
>>> Nobody even suggested that. For instance, if these addresses had a >>> lifetime (in the RFC4941 sense), they wouldn't be called "stable" in the >>> first place. >> >> I suggest that you add a discussion of site renumbering considerations. >> The problems described in draft-ietf-6renum-static-p

Re: FW: 6MAN WG Last Call:

2012-12-18 Thread Fernando Gont
Hi, Brian, On 12/18/2012 05:06 AM, Brian E Carpenter wrote: > On 18/12/2012 02:01, Fernando Gont wrote: > ... >> Nobody even suggested that. For instance, if these addresses had a >> lifetime (in the RFC4941 sense), they wouldn't be called "stable" in the >> first place. > > I suggest that you ad

Re: FW: 6MAN WG Last Call:

2012-12-18 Thread Brian E Carpenter
On 18/12/2012 02:01, Fernando Gont wrote: ... > Nobody even suggested that. For instance, if these addresses had a > lifetime (in the RFC4941 sense), they wouldn't be called "stable" in the > first place. I suggest that you add a discussion of site renumbering considerations. The problems describe