[kea-dev] Issues with the REJECT class

[Philip Prindeville]

My understanding is that if there is no pool, then the server will simple not respond.

I'm trying to get it to NAK and match the behavior of ISC-DHCP.

Thanks


> On May 31, 2026, at 11:05 PM, Peter Davies <peterd at isc.org> wrote:
> 
> Hi Philip.
>   It looks like "interface-config" needs a terminating curly bracket; ie
> {
>   "Dhcp4": {
>     "lease-database": {
>       "type": "memfile",
>       "persist": true,
>       "name": "kea-leases4.csv",
>       "lfc-interval": 900,
>       "max-row-errors": 1
>     },
>     "interfaces-config": {
>       "interfaces": [
>         "eth1.3",
>         "eth1.4"
>       ]
>     },
>     "client-classes": [
>       {
>         "name": "REJECT",
>         "test": "not member('KNOWN')"
>       }
>     ],
>     "reservations-in-subnet": true
>   }
> }
> 
> If you wish to grant leases only to  clients  with host reservations,  you could
> define the subnet without any pools
> 
> NB: there is a built-in UNKNOWN class
> 
> /Peter
> 
> -- 
> Peter Davies
> Support Engineer
> Internet Systems Corporation
> 
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