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Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA

Ted Lemon <mellon@fugue.com> Wed, 15 November 2017 09:10 UTC

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References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <d944ac55-d67d-d7d4-8eeb-f60438fdda2d@gmail.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> <eccd5dd2-3542-fdbc-89a2-7d13d563163d@gmail.com> <2fbc8325961c49a1944e3ee216fcb032@XCH-ALN-003.cisco.com> <a3f9cd45-403a-c6f6-6e9a-98a9b651a339@gmail.com> <4c25045f863a4e368f58a5a4a3917bde@XCH-ALN-003.cisco.com> <37918108-c5ed-a82d-2d97-227388ec25d0@gmail.com> <1A785964-1088-4081-B7DC-58E3CD9B0605@cisco.com> <9bad26dc5b2d42ee9cca47adb32eedc0@XCH15-06-08.nw.nos.boeing.com> <DB4FB172-B3CB-4471-9E07-A4CEE34D6A82@fugue.com> <f5b1fdd0-407f-c4ef-d937-dfd3ad909b47@marples.name>
From: Ted Lemon <mellon@fugue.com>
Date: Wed, 15 Nov 2017 17:10:07 +0800
Message-ID: <CAPt1N1m6iExrtcbj9M2Tc10miZWH9Qk+oGNFOGPCPESqUgOcDw@mail.gmail.com>
To: Roy Marples <roy@marples.name>
Cc: "Templin, Fred L" <Fred.L.Templin@boeing.com>, dhcwg <dhcwg@ietf.org>, Alexandre Petrescu <alexandre.petrescu@gmail.com>, "Bernie Volz (volz)" <volz@cisco.com>
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Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA
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Also, it's not nonsensical to use an address once you have one.

On Nov 15, 2017 16:50, "Roy Marples" <roy@marples.name> wrote:

> On 20/10/17 20:52, Ted Lemon wrote:
>
>> On Oct 20, 2017, at 4:46 PM, Templin, Fred L <Fred.L.Templin@boeing.com
>> <mailto:Fred.L.Templin@boeing.com>> wrote:
>>
>>> Sorry I am late to this discussion, but AERO uses link-local source
>>> address for
>>> all DHCPv6 PD messaging. It works in the public domain implementations I
>>> have been working with.
>>>
>>
>> It's actually nonsensical to use some other address.   One of the
>> purposes of DHCP is to get addresses, so if the server assumes you already
>> have one, how's that going to work?
>>
>
> That's not true.
> Often you need to use a non link-local source address when the server
> sends OPTION_UNICAST with a non link-local address and you want to renew
> the lease.
>
> Roy
>

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