[Kea-users] Problem with setting "valid-lifetime" in a client-class

[kesper]

Hello,

i'm trying to set a special value for "valid-lifetime" with a globally 
defined client-class:


          "valid-lifetime" : 3333,
      ...
          "client-classes" : [
             {
                "name" : "InfiniteLease",
                "valid-lifetime": 4294967295,
                "option-data" : [
                  {
                    "code" : 6,
                    "data" : "1.2.3.4",
                    "name" : "domain-name-servers"
                  }
                ]
            }

later on in the configuration i have

          "shared-networks" : [
             {
                "name" : "DHCP-Test",
                "subnet4" : [
                   {
                      "id" : 1,
                      "option-data" : [
                         {
                            "data" : "9.8.7.6",
                            "name" : "domain-name-servers"
                         },

                         ...

                       ],
                      "reservations" : [

                         {
                            "client-classes" : [
                               "InfiniteLease",
                            ],
                            "hostname" : "testpc-kea",
                            "hw-address" : "00:17:C3:C2:73:E3",
                            "ip-address" : "5.6.7.8",
                            "option-data" : [
                               {
                                  "data" : "testpc-kea",
                                  "name" : "host-name"
                               },
                               {
                                  "data" : "example.org",
                                  "name" : "domain-name"
                               }
                            ] #option-data
                         } #testpc-kea

                       ] #reservations
                     } #subnet4
                   } #DHCP-Test
                ] #shared-networks



In this scenario the client testpc-kea doesn't get the expected 
valid-lifetime of 4294967295, but instead the default of 3333. But it 
_does_ get domain-name-servers="1.2.3.4", so i can tell that it is 
associated with the client-class=InfiniteLease".

In a second test i removed the shared-networks[] from the configuration. 
When i have only the subnet4-declaration the clients gets 
"valid-lifetime"= 4294967295 as intended (and also 
domain-name-servers="1.2.3.4"). The only difference is the removal of 
shared-networks.

This seems a bit confusing to me. Is this a bug in kea or is the 
shared-networks-declaration changing the scope of valid-lifetime in an 
(for me) unexpected way?

Any help or explanation is appreciated.

Thanks,
Kurt

-- 
Kurt Kesper
Abteilung Kommunikation
Hochschulrechenzentrum (HRZ)

Philipps-Universität Marburg
Hans-Meerwein-Straße 6
35032 Marburg

https://www.uni-marburg.de/de/hrz