Hi Darren,
I am using the latest dev Kea 2.7.7 version with RHEL9, the package for dhcp6
is isc-kea-dhcp6-2.7.7-isc20250326114722.el9.x86_64.rpm. Here’re my definition
on the “device” class. I only have this client class defined, don’t have the
“device_class2” client class in definition. And I am using client-classes so
that part is expected.
{
"Dhcp6": {
"allocator": "iterative",
"calculate-tee-times": true,
"client-classes": [
{
"name": “device",
"option-data": [
{
"always-send": true,
"code": 34,
"csv-format": true,
"data": “xxxxxxxx",
"name": "syslog-servers",
"never-send": false,
"space": "vendor-4491"
},
{
"always-send": true,
"code": 37,
"csv-format": true,
"data": “xxxxxxxxx",
"name": "time-servers",
"never-send": false,
"space": "vendor-4491"
},
{
"always-send": true,
"code": 38,
"csv-format": true,
"data": "0",
"name": "time-offset",
"never-send": false,
"space": "vendor-4491"
},
{
"always-send": true,
"code": 61,
"csv-format": true,
"data": “xxxxx",
"name": "ccap-cores",
"never-send": false,
"space": "vendor-4491"
},
{
"always-send": true,
"code": 17,
"csv-format": false,
"data": "",
"name": "vendor-opts",
"never-send": false,
"space": "vendor-4491"
}
],
"test": "substring(option[17].option[2].hex,0,3) == ‘device'"
}
],
On Apr 19, 2025, at 6:19 AM, Darren Ankney <darren.ank...@gmail.com> wrote:
Hi,
Please share what version of Kea you are using. Not only did the
class name change, but the statement became a list (client-class vs
client-classes). Suspect you might be using a dev version as that
feature has not been released in stable. There could be some bug
there, though I am unsure why an _class2 would be added in this case.
Do you have a "device" or "device_class2" defined in client-classes
(not in the subnet but an actual class definition)?
Thank you,
Darren Ankney
On Thu, Apr 17, 2025 at 5:23 PM tachibanash...@outlook.com
<tachibanash...@outlook.com> wrote:
Greetings,
I have a subnet definition in my kea-dhcp6.conf, it inherited its configuration
from a client class called “device”, then I gave it some customization
configuration in the option-data section. After I used the config-write command
to get the config from memory, I noticed the client class of this subbed is no
longer “device” but “device_class2”, even I never defined this client class. My
guess is because of the customization data in option-data section, so kea
realized its configuration is different from the original client class
“device”, and it gives a new name.
Is this behavior expected? I think this could bring some troubles when we try
to do automatization. Now after we use the subnet hook, we have to use the
config-write command Darren mentioned to save the config changes from memory to
harddisk. And now in the new config file, we will have those “device_class2”
client class which previously didn’t exist.
Original config in kea-dhcp6.conf:
{
"id": 2,
"subnet": "2100:100:10:10::1/64",
"option-data": [
{
"space": "vendor-4491",
"name": "cores",
"code": 61,
"data": "2100:100:10:10::10-2100:100:10:10::100",
"always-send": true
}
],
"pools": [
{
"pool": "2100:100:10:10::10-2100:100:10:10::100"
}
],
"relay": {
"ip-addresses": [ "2100:100:10:10::1" ]
},
"interface": "ens2",
"client-class": “device",
"allocator": "iterative"
},
After using config-write:
{
"allocator": "iterative",
"calculate-tee-times": true,
"client-classes": [ “device_class2" ],
"id": 2,
"interface": "ens2",
"max-preferred-lifetime": 907200,
"max-valid-lifetime": 1209600,
"min-preferred-lifetime": 907200,
"min-valid-lifetime": 1209600,
"option-data": [
{
"always-send": true,
"code": 61,
"csv-format": true,
"data": “2100:100:0:30:0:0:0:22",
"name": "cores",
"never-send": false,
"space": "vendor-4491"
}
],
"pd-allocator": "iterative",
"pd-pools": [ ],
"pools": [
{
"option-data": [ ],
"pool": “2100:100:10:10::10-2100:100:10:10::100"
}
],
"preferred-lifetime": 907200,
"rapid-commit": false,
"rebind-timer": 1058400,
"relay": {
"ip-addresses": [ "2100:100:10:10::1" ]
},
"renew-timer": 604800,
"reservations": [ ],
"store-extended-info": false,
"subnet": "2100:100:10:10::1/64",
"t1-percent": 0.5,
"t2-percent": 0.8,
"valid-lifetime": 1209600
},
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