[Kea-users] Struggling with "failed to select a subnet for incoming packet" - Kea 3.0.3

Tim Harman tim at muppetz.com
Thu Apr 9 21:34:13 UTC 2026


> This is a VyOS-specific bug, which happens in this exact situation. VyOS is patching Kea to fix another issue, but the patch is incorrect. The patch was submitted to us here:
> 
> https://gitlab.isc.org/isc-projects/kea/-/merge_requests/2811
> 
> One of our developers noticed the problem, and there's a second commit in the MR which resolves it, but that has not been applied to VyOS's patch.  If you build VyOS yourself, you can update the patch or remove it if the issue it's fixing doesn't apply to you.
> 
> -Doug
> 

Thank you very much Doug for taking the time to review my logs and provide this feedback.
I will go back and log a ticket with the VyOS Developers.

Again, appreciate your time and your efforts on Kea.

Kind Regards,
Tim Harman



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