[SOLVED] 25.1.11 Upgrade breaks DNS resolution with KEA DHC IPv4

Started by amichel, July 17, 2025, 02:07:53 PM

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After Upgrading to 25.1.11 I realized that Kea DHCP Server still assigns IP Adresses, but DNS is no longer available. I did not add any extra DHCP options so the Gatway and the DNS Server is the IPadress assigned to the KEA interface on that specific VLAN.
Could not test any further as I need the environment up and running and decided to revert the snapshot.
Anyone had similar experiences?
Andreas

Kea is DHCP and DHCP only. So, if your DNS is no longer available, it cannot be blamed on Kea, but on whatever you use for DNS (probably Unbound). That is, unless Kea distributes the wrong IP for the DNS server to the clients.
Intel N100, 4* I226-V, 2* 82559, 16 GByte, 500 GByte NVME, ZTE F6005

1100 down / 800 up, Bufferbloat A+

I am aware, but fact is that until the upgrade it worked out of the box assigning to the clients the KEA assigned IP as GW and DNS server. And Unbound in my case was listening on those interfaces.
This was then not working after the upgrade.
However I tried the upgrade again and it works now.
Thanks for the help.