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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
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<div class="">kea-dhcp6.conf</div>
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<div class="">"subnet6": [</div>
<div class="">{</div>
<div class=""> "subnet": "2001:db8:0001::/48",</div>
<div class=""> "pd-pools": [ { "prefix": "2001:db8:8000::", "prefix-len": 36,"delegated-len": 56 } ]</div>
<div class="">}</div>
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<div class="">,</div>
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<div 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 )</div>
<div class="">Then you will have a massive numbers of internal /56 routes.</div>
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<div class="">I should instead do ~like this</div>
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<div class="">"subnet6": [</div>
<div class="">{</div>
<div class=""> "subnet": "2001:db8:0002::/120",</div>
<div class=""> "pd-pools": [ { "prefix": "2001:db8:8000::", "prefix-len": 40,"delegated-len": 56 } ]</div>
<div class="">}</div>
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<div class="">And only announce the /40 from “one site router” to the IGP.</div>
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<blockquote type="cite" class="">
<div class="">On 8 Jun 2022, at 15:06, perl-list <<a href="mailto:perl-list@network1.net" class="">perl-list@network1.net</a>> wrote:</div>
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<div 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="">
<blockquote type="cite" class="">From: "Blažej Krajňák" <<a href="mailto:blazej.krajnak@gmail.com" class="">blazej.krajnak@gmail.com</a>><br class="">
To: "kea-users" <<a href="mailto:kea-users@lists.isc.org" class="">kea-users@lists.isc.org</a>><br class="">
Sent: Wednesday, June 8, 2022 8:43:26 AM<br class="">
Subject: [Kea-users] One PD pool for multiple subnets<br class="">
</blockquote>
<br class="">
<blockquote type="cite" class="">Hello,<br class="">
</blockquote>
<br class="">
<blockquote type="cite" 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="">
</blockquote>
<br class="">
<blockquote type="cite" class="">Thanks,<br class="">
Blažej<br class="">
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