[Kea-users] DDNS without ddns-qualifying-suffix ?

lejeczek peljasz at yahoo.co.uk
Thu Jan 1 14:43:12 UTC 2026


Hi guys.
Is it possible to make KEA do DDNS this way
....
     "dhcp-ddns": {
       "enable-updates": true
     },
....
     "subnet4": [
       {
         "id": 1,
         "subnet": "10.3.0.0/22",
         "ddns-override-client-update": false,
         "valid-lifetime": 3600,
         "max-valid-lifetime": 3600,
         "pools": [
           {
             "pool": "10.3.1.10 - 10.3.1.20"
           }
         ],
         "option-data": [
           {
             "space": "dhcp4",
             "name": "domain-name",
             "code": 15,
             "data": "hub.mine.priv"
           },
....
         "reservations": [
           {
             "hostname": "cromo",
             "hw-address": "52:54:00:74:5b:08",
             "option-data": [
               {
                 "space": "dhcp4",
                 "name": "domain-name",
                 "code": 15,
                 "data": "private.way"
               },
             ]
             //"client-classes": [ "PRIVATE.ROAD" ]
           },
....

/ddns-qualifying-suffix/ is absent, I read somewhere that in 
it's absence /domain-name/ is used for DDNS then.
I'm hoping that subnet will do DDNS with one domain and if a 
client has reservation with another domain, then such 
"reserved" domain will be used, but..
KEA with such config is not doing DDNS at all I think - does 
that make sense & is what I'm hoping for possible?

many thanks, L.
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