Hi Dan, I've never tested the configuration, but it seems to be the case based on the documentation.
Thank you, Darren Ankney On Fri, Jun 23, 2023 at 8:38 AM Geist, Dan (CCI-Atlanta) <dan.ge...@cox.com> wrote: > > Thanks, Darren. This mostly has to do with how the clients in the space USE > the v6 PDs. It’s a MAP-T environment where use of that block correlates to > that client devices sending all traffic using source-ports of 1-1023 (which > is obviously problematic). Unlikely corner case, just trying to ensure this > will work the way we are hoping IF it’s used. > > > > Thanks. > Dan > > > > From: Kea-users <kea-users-boun...@lists.isc.org> on behalf of Darren Ankney > <darren.ank...@gmail.com> > Date: Friday, June 23, 2023 at 6:31 AM > To: kea-users@lists.isc.org <kea-users@lists.isc.org> > Subject: [EXTERNAL] Re: [Kea-users] Dhcp6 Prefix Exclude use case question > > Hi Dan, > > I don't think that is the purpose of the option, but I suppose if no > device asks for an excluded prefix then the prefix will not be > allocated to any device. How would you be able to guarantee this? I > would think a better solution would be to engineer your network > differently such that you don't need to leave off part of the prefix > delegation. Surely there are plenty of IPv6 subnets to go around to > accomplish this? > > Thank you, > > Darren Ankney > > On Wed, Jun 21, 2023 at 5:09 PM Dan Geist <d...@polter.net> wrote: > > > > Greetings, all. I'm exploring using the "prefix exclude" feature to do > > something a little different than what it's RFC describes and would like to > > know if my scenario would work. In the kea ARM, the example config is as > > follows: > > > > "Dhcp6": { > > "subnet6": [ > > { > > "subnet": "2001:db8:1::/48", > > "pd-pools": [ > > { > > "prefix": "2001:db8:1:8000::", > > "prefix-len": 56, > > "delegated-len": 64, > > "excluded-prefix": "2001:db8:1:8000:cafe:80::", > > "excluded-prefix-len": 72 > > } > > ] > > } > > ] > > } > > > > This allows a device that sends a Prefix Exclude option to be allocated the > > indicated /72. > > > > In my environment, we'd like to be able to allocate PDs from a block that > > is discrete from the subnet and in which the very first PD is NEVER > > assigned, ala: > > > > "Dhcp6": { > > "subnet6": [ > > { > > "subnet": "2001:db8:1::/48", > > "pd-pools": [ > > { > > "prefix": "2001:db8:2::", > > "prefix-len": 48, > > "delegated-len": 60, > > "excluded-prefix": "2001:db8:2::", > > "excluded-prefix-len": 60 > > } > > ] > > } > > ] > > } > > > > Assuming I don't have any dhcpv6 endpoint devices sending the excluded > > prefix option, does this accomplish what I'm attempting, which is: never > > use the first /60 from the PD /48 prefix? > > > > Thanks > > Dan > > > > -- > > Dan Geist dan(@)polter.net > > > > -- > > ISC funds the development of this software with paid support subscriptions. > > Contact us at > > https://urldefense.com/v3/__https://www.isc.org/contact/__;!!Hit2Ag!ztViBv-QgmZ06HbBl5Y9ZrN-Xr4nESzE_PPkzf-YD9ap-HY5JI-eQbQj327_Nf3TbzbiCDtd_plvYVpxEDd1KQ$ > > for more information. > > > > To unsubscribe visit > > https://urldefense.com/v3/__https://lists.isc.org/mailman/listinfo/kea-users__;!!Hit2Ag!ztViBv-QgmZ06HbBl5Y9ZrN-Xr4nESzE_PPkzf-YD9ap-HY5JI-eQbQj327_Nf3TbzbiCDtd_plvYVqNnhhgkw$ > > . > > > > Kea-users mailing list > > Kea-users@lists.isc.org > > https://urldefense.com/v3/__https://lists.isc.org/mailman/listinfo/kea-users__;!!Hit2Ag!ztViBv-QgmZ06HbBl5Y9ZrN-Xr4nESzE_PPkzf-YD9ap-HY5JI-eQbQj327_Nf3TbzbiCDtd_plvYVqNnhhgkw$ > -- > ISC funds the development of this software with paid support subscriptions. > Contact us at > https://urldefense.com/v3/__https://www.isc.org/contact/__;!!Hit2Ag!ztViBv-QgmZ06HbBl5Y9ZrN-Xr4nESzE_PPkzf-YD9ap-HY5JI-eQbQj327_Nf3TbzbiCDtd_plvYVpxEDd1KQ$ > for more information. > > To unsubscribe visit > https://urldefense.com/v3/__https://lists.isc.org/mailman/listinfo/kea-users__;!!Hit2Ag!ztViBv-QgmZ06HbBl5Y9ZrN-Xr4nESzE_PPkzf-YD9ap-HY5JI-eQbQj327_Nf3TbzbiCDtd_plvYVqNnhhgkw$ > . > > Kea-users mailing list > Kea-users@lists.isc.org > https://urldefense.com/v3/__https://lists.isc.org/mailman/listinfo/kea-users__;!!Hit2Ag!ztViBv-QgmZ06HbBl5Y9ZrN-Xr4nESzE_PPkzf-YD9ap-HY5JI-eQbQj327_Nf3TbzbiCDtd_plvYVqNnhhgkw$ -- ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. Kea-users mailing list Kea-users@lists.isc.org https://lists.isc.org/mailman/listinfo/kea-users