Re: [dhcwg] DHCPv6 RENEW with a new address

["Mudric, Dusan (Dusan)" <[e-mail]>]

Hi,

I posted this question in dhcp-users group. Since there was no answer, I am resending the same question to DHCWG. 

> > Hi,
>>
> > What would be a real life use case (even better, use cases) for 
> > getting a new address during the IPv6 address renewal?
>>
> >> Thanks,
> > Dusan.

18.1.3. Creation and Transmission of Renew Messages
    "The server may also add new addresses to the IA. "
    "The server may remove addresses from the IA by setting the preferred and valid lifetimes of those addresses to zero."

When will server do this? How can I test it?

Regards,
Dusan.


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Today's Topics:

   1. Re: DHCPv6 RENEW with a new address (Mudric, Dusan (Dusan))


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Message: 1
Date: Wed, 23 Nov 2016 14:39:47 +0000
From: "Mudric, Dusan (Dusan)" <[e-mail]>
To: "[e-mail]" <[e-mail]>
Subject: Re: DHCPv6 RENEW with a new address
Message-ID:
	<[e-mail]>
	
Content-Type: text/plain; charset="us-ascii"

On RENEW, it is allowed to remove the old IPv6 address and add a new one:

https://urldefense.proofpoint.com/v2/url?u=https-3A__tools.ietf.org_html_rfc3315-23section-2D18.1.3&d=DQICAg&c=BFpWQw8bsuKpl1SgiZH64Q&r=UT3Bk9cbLeaJxhf3iCrhIoUWB8YLZU23029sMQGQ2kY&m=bJvWui61rhgrP19VTIFe8ZmEgn8gb0lK0b29th12ekc&s=9wJndZlFqkiC7Dx4A4Cykpsgx1MtPKxUcrnOk7ssG7I&e= 

18.1.3. Creation and Transmission of Renew Messages
    "The server may also add new addresses to the IA. "
    "The server may remove addresses from the IA by setting the preferred and valid lifetimes of those addresses to zero."

When will server do this? After an outage?

Regards,
Dusan.

> Date: Tue, 22 Nov 2016 10:00:03 -0500 (EST)
> From: perl-list <[e-mail]>
> To: Users of ISC DHCP <[e-mail]>
> Subject: Re: DHCPv6 RENEW with a new address
> Message-ID:
>	<[e-mail]>
> Content-Type: text/plain; charset="utf-8"
>
> I don't think that it would ever happen quite that way. If the renewal failed, at the end of the lease, the client > device should send a solicit message which could result in a new address (or the same address the client had > before). I don't think the client can get a new (different?) address during renewal? 
>
> Anyone else? 
>
> > From: "Mudric, Dusan (Dusan)" <[e-mail]>
> > To: [e-mail]
> > Sent: Tuesday, November 22, 2016 9:07:05 AM
> > Subject: DHCPv6 RENEW with a new address
> >
> > Hi,
>>
> > What would be a real life use case (even better, use cases) for 
> > getting a new address during the IPv6 address renewal?
>>
> >> Thanks,
> > Dusan.


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