I first wondered if something could be done in a class but as you mention, docs indicate that ddns-send-updates directive is limited to subnet as lowest level so doesn’t look there is much options in current Kea config.
Other options: * Have clients with host reservation set option 81 bits to disable DDNS updates. * Prevent DDNS updates on DNS server for specified zones/names. Not sure what nameserver you’re using but BIND can be configured to prevent DDNS updates at individual name level if needed. From: Kea-users <[email protected]> on behalf of Francis Dupont <[email protected]> Date: Wednesday, March 9, 2022 at 5:05 AM To: Kenneth Porter <[email protected]> Cc: Kea users <[email protected]> Subject: Re: [Kea-users] Suppress DDNS for reservations CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Kenneth Porter writes: > I've enabled DDNS for my subnet but I don't want it used for reservations, > only for the pool. The DNS entries for reservations are manually entered in > my DNS in a higher-level domain. (The pool is entered in the "dhcp" > subdomain which allows updates.) > > My subnet is a /16 and the pool is a specific /24 of that. Other /24's are > used for specific functions, including the gateway. So I can't just put the > pool in its own subnet or it will get the wrong mask and won't be able to > reach the gateway. > > I can't use ddns-send-updates set to false in a reservation. It only works > in a subnet declaration or at global scope. > > What am I missing? => I suggest to try a shared network with two subnets covering the same range but with different textual representations (e.g. put ...1 in the second). Thanks Francis Dupont <[email protected]> -- ISC funds the development of this software with paid support subscriptions. Contact us at https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.isc.org%2Fcontact%2F&data=04%7C01%7Crick.frey%40windstream.com%7C504617dd07214ae2597008da01bcae05%7C2567b4c1b0ed40f5aee358d7c5f3e2b2%7C0%7C0%7C637824207142398650%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=%2BCg0BuM1emxs%2FHBQi0oGjWRLHFEl9%2BL67lF4ccvq7gQ%3D&reserved=0 for more information. To unsubscribe visit https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.isc.org%2Fmailman%2Flistinfo%2Fkea-users&data=04%7C01%7Crick.frey%40windstream.com%7C504617dd07214ae2597008da01bcae05%7C2567b4c1b0ed40f5aee358d7c5f3e2b2%7C0%7C0%7C637824207142398650%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=%2FqaethbUQi6eNw9Fy9Yr7GZjFltPnb94xl4BR%2B%2F%2FcAQ%3D&reserved=0. Kea-users mailing list [email protected] https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.isc.org%2Fmailman%2Flistinfo%2Fkea-users&data=04%7C01%7Crick.frey%40windstream.com%7C504617dd07214ae2597008da01bcae05%7C2567b4c1b0ed40f5aee358d7c5f3e2b2%7C0%7C0%7C637824207142398650%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=%2FqaethbUQi6eNw9Fy9Yr7GZjFltPnb94xl4BR%2B%2F%2FcAQ%3D&reserved=0 Sensitivity: Internal
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