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

Roy Marples <roy@marples.name> Wed, 15 November 2017 08:50 UTC

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To: Ted Lemon <mellon@fugue.com>, "Templin, Fred L" <Fred.L.Templin@boeing.com>
Cc: "dhcwg@ietf.org" <dhcwg@ietf.org>, Alexandre Petrescu <alexandre.petrescu@gmail.com>, "Bernie Volz (volz)" <volz@cisco.com>
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From: Roy Marples <roy@marples.name>
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Date: Wed, 15 Nov 2017 08:50:03 +0000
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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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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