ULA [was: ipv6-ops Digest, Vol 159, Issue 1]
Brian E Carpenter
brian.e.carpenter at gmail.com
Wed Oct 23 21:53:03 CEST 2019
On 24-Oct-19 03:57, David Forrest wrote:
> My ULA is a /48 while Charter Spectrum only gives me a /64. Then I lose my network info.
Huh? You will simply use a /64 within the ULA /48. However, you should only generate the ULA prefix once and store it in stable storage; that should be a feature of your CE. Then you never change the ULA prefix.
Regards
Brian Carpenter
>
> Amicalement,
> Dave
>
> Maple Park Development
> Linux Systems Integration
> http://www.maplepark.com/
>
>
>
> On Wed, Oct 23, 2019 at 9:35 AM Kristian McColm <Kristian.McColm at rci.rogers.com <mailto:Kristian.McColm at rci.rogers.com>> wrote:
>
> Isn't that what ULA's are for?
>
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> *From:* ipv6-ops-bounces+kristian.mccolm=rci.rogers.com at lists.cluenet.de <mailto:rci.rogers.com at lists.cluenet.de> <ipv6-ops-bounces+kristian.mccolm=rci.rogers.com at lists.cluenet.de <mailto:rci.rogers.com at lists.cluenet.de>> on behalf of Michael Sturtz <Michael.Sturtz at PACCAR.com>
> *Sent:* October 23, 2019 10:26 AM
> *To:* ipv6-ops at lists.cluenet.de <mailto:ipv6-ops at lists.cluenet.de> <ipv6-ops at lists.cluenet.de <mailto:ipv6-ops at lists.cluenet.de>>
> *Subject:* RE: ipv6-ops Digest, Vol 159, Issue 1
>
> I have found more problems with the DHCPv6-PD. The issue is on many home networks where people are using server type hardware such as Windows(TM) networks where DNS is used to locate and secure the network the renumbering event creates major problems as the on premises DHCPv6 server has no way to understand that a renumber event has occurred. People are very used to the IPv4 RFC 1918 static addressing where nothing on their local internal network will change without notice. The fact that ISPs can randomly change the internal delegated address without notice is a major problem. That will confuse people and cause problems especially where a customer has equipment such as Windows or Linux servers or other equipment that requires static addressing or DHCPv6. I understand that for certain operational reasons ISPs need to renumber addresses however I suggest we discourage the practice. We also could modify the RFC to require a message to be sent by CPE to all downstream
> network devices that a network renumber event is being scheduled. This can be sent as a multicast message that encodes the date that the renumbering will occur. I realize that we need to understand the security implications of this. This is just one idea that could smooth the renumbering events when then have to happen for some operational reason.
>
> -----Original Message-----
> From: ipv6-ops-bounces+michael.sturtz=paccar.com at lists.cluenet.de <mailto:paccar.com at lists.cluenet.de> <ipv6-ops-bounces+michael.sturtz=paccar.com at lists.cluenet.de <mailto:paccar.com at lists.cluenet.de>> On Behalf Of ipv6-ops-request at lists.cluenet.de <mailto:ipv6-ops-request at lists.cluenet.de>
> Sent: Wednesday, October 23, 2019 3:00 AM
> To: ipv6-ops at lists.cluenet.de <mailto:ipv6-ops at lists.cluenet.de>
> Subject: ipv6-ops Digest, Vol 159, Issue 1
>
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