kea dhcp server not sending vendor option based on host reservation

Hi, I have defined a vendor specific option under the space "vendor-opts-space" and included it in a host reservation. However, the server only sends the IP address reserved for this host and never sends the vendor options. I have verified that through wireshark capture too.

Here is the "option-def":

    "option-def": [
        {
            "name": "oran-dhcpv6",
            "code": 1,
            "space": "vendor-opts-space",
            "type": "record",
            "array": false,
            "record-types": "uint8, uint8, string",
            "encapsulate": ""
        }
    ],

And this is the host reservation:

                {
                    "duid": "0:02:0:0:0:c1:43:38:32:41:35:38:34:31:39:31",
                    "ip-addresses": [ "3ffe:501:ffff:100::130" ],
                    "option-data": [
                        {
                            "name": "oran-dhcpv6",
                            "space": "vendor-opts-space",
                            "data": "1, 4, 2C6 B9 9F 9"
                        },
                        {
                            //"name": "vendor-opts",
                            "code": 17,
                            // ORAN specified enterprise-number 53148 on ORAN MP spec section 3.1.4
                            "data": "53148"
                        }
                        ]
                },

I dont see any error or warning when I enable DEBUG mode for the kea dhcp server but don't see the options being sent. Is there something I need to specify in the dhclient's config file to request this option? I suppose not, because this is specified for this host reservation, isn't it? Thanks