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I just remembered that I have written this and is almost exact what you wrote.
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<div class=""><a href="https://labs.ripe.net/author/teklov/ipv6-address-planning-in-gavlenet/" class="">https://labs.ripe.net/author/teklov/ipv6-address-planning-in-gavlenet/</a><br class="">
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Torbjörn Eklöv | Interlan Gefle AB<br class="">
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<blockquote type="cite" class="">
<div class="">On 8 Jun 2022, at 17:13, Blažej Krajňák <blazej.krajnak@gmail.com> wrote:</div>
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<div class="">Until now I planned per site:<br class="">
- /56 for last-mile links (/64) to customers CPEs<br class="">
- /40 for PD<br class="">
<br class="">
It looks I have to break it to /48 per VLAN and site for PD. I really<br class="">
don't see any other option.<br class="">
<br class="">
Just to explain clearly: for me, a VLAN is one sector antenna or one<br class="">
PON port (1:128 splitting). So 256x /56 subnets is enough.<br class="">
<br class="">
There is still an option to announce only sumarized /40 to IGP, that's<br class="">
not problem.<br class="">
<br class="">
st 8. 6. 2022 o 16:45 Torbjörn Eklöv via Kea-users<br class="">
<kea-users@lists.isc.org> napísal(a):<br class="">
<blockquote type="cite" class=""><br class="">
You can use multiple subnets in any way you wan’t with DHCPv6 PD. If it’s correct way to do it it’s up to you but I shouldn’t use my example below<br class="">
<br class="">
kea-dhcp6.conf<br class="">
.<br class="">
.<br class="">
"subnet6": [<br class="">
{<br class="">
"subnet": "2001:db8:0001::/48",<br class="">
"pd-pools": [ { "prefix": "2001:db8:8000::", "prefix-len": 36,"delegated-len": 56 } ]<br class="">
}<br class="">
.<br class="">
,<br class="">
<br class="">
If the DHCPv6 relay adress is included in the 2001:db8:0001::/48 subnet the kea-dhcp6 will happily assign one /56 from the 2001:db8:8000::/36 subnet. ( Over one miljon /56 )<br class="">
Then you will have a massive numbers of internal /56 routes.<br class="">
<br class="">
I should instead do ~like this<br class="">
<br class="">
"subnet6": [<br class="">
{<br class="">
"subnet": "2001:db8:0002::/120",<br class="">
"pd-pools": [ { "prefix": "2001:db8:8000::", "prefix-len": 40,"delegated-len": 56 } ]<br class="">
}<br class="">
<br class="">
And only announce the /40 from “one site router” to the IGP.<br class="">
<br class="">
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"A home without IPv6 is just a house"<br class="">
<br class="">
On 8 Jun 2022, at 15:06, perl-list <perl-list@network1.net> wrote:<br class="">
<br class="">
as far as I understand, that isn't possible. It probably should be given the way prefix delegation works, but that wasn't how they chose to design it (at least the way I understand it). Each prefix must be part of a particular subnet which can all be grouped
together under a single shared network but that also shares the subnets between the sites.<br class="">
<br class="">
----- Original Message -----<br class="">
<br class="">
From: "Blažej Krajňák" <blazej.krajnak@gmail.com><br class="">
To: "kea-users" <kea-users@lists.isc.org><br class="">
Sent: Wednesday, June 8, 2022 8:43:26 AM<br class="">
Subject: [Kea-users] One PD pool for multiple subnets<br class="">
<br class="">
<br class="">
Hello,<br class="">
<br class="">
<br class="">
in our ISP network setup we need to use one PD pool for multiple<br class="">
subnets (this PD pool belongs to one site router which handles<br class="">
mulitple VLANs - subnets). Is it possible / what's the correct way to<br class="">
do that?<br class="">
<br class="">
<br class="">
Thanks,<br class="">
Blažej<br class="">
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