sonic-buildimage/dockers/docker-dhcp-server/kea-dhcp4.conf.j2

{%- set default_lease_time = 900 -%}
{
    "Dhcp4": {
{%- if customized_options %}
        "option-def": [
    {%- for option_name, config in customized_options.items() %}
            {
                "name": "{{ option_name }}",
                "code": {{ config["id"] }},
                "type": "{{ config["type"] }}"
            }{% if not loop.last %},{% endif %}
    {%- endfor %}
        ],
{%- endif %}
        "hooks-libraries": [
            {
                "library": "/usr/local/lib/kea/hooks/libdhcp_run_script.so",
                "parameters": {
                    "name": "{{ lease_update_script_path }}",
                    "sync": false
                }
            }
        ],
        "interfaces-config": {
            "interfaces": [
                "eth0"
            ]
        },
        "control-socket": {
            "socket-type": "unix",
            "socket-name": "/run/kea/kea4-ctrl-socket"
        },
        "lease-database": {
            "type": "memfile",
            "persist": true,
            "name": "{{ lease_path }}",
            "lfc-interval": 3600
        },
        "subnet4": [
{%- set add_subnet_preceding_comma = { 'flag': False } %}
{%- for subnet_info in subnets %}
    {%- if add_subnet_preceding_comma.flag -%},{%- endif -%}
    {%- set _dummy = add_subnet_preceding_comma.update({'flag': True}) %}
            {
                "subnet": "{{ subnet_info["subnet"] }}",
                "pools": [
    {%- set add_pool_preceding_comma = { 'flag': False } %}
    {%- for pool in subnet_info["pools"] %}
            {%- if add_pool_preceding_comma.flag -%},{%- endif -%}
            {%- set _dummy = add_pool_preceding_comma.update({'flag': True}) %}
                    {
                        "pool": "{{ pool["range"] }}",
                        "client-class": "{{ pool["client_class"] }}"
                    }
    {%- endfor%}
                ],
                "option-data": [
    {%- for option_name, config in subnet_info["customized_options"].items() %}
                    {
                        "name": "{{ option_name }}",
                        "data": "{{ config["value"] }}",
                        "always-send": {{ config["always_send"] }}
                    },
    {%- endfor %}
                    {
                        "name": "routers",
                        "data": "{{ subnet_info["gateway"] if "gateway" in subnet_info else subnet_info["server_id"] }}"
                    },
                    {
                        "name": "dhcp-server-identifier",
                        "data": "{{ subnet_info["server_id"] }}"
                    }
                ],
                "valid-lifetime": {{ subnet_info["lease_time"] if "lease_time" in subnet_info else default_lease_time }},
                "reservations": []
            }
{%- endfor %}
        ],
        "loggers": [
            {
                "name": "kea-dhcp4",
                "output_options": [
                    {
                        "output": "/var/log/kea-dhcp.log",
                        "pattern": "%-5p %m\n"
                    }
                ],
                "severity": "INFO",
                "debuglevel": 0
            }
        ]{%- if client_classes -%},
        "client-classes": [
            {%- set add_preceding_comma = { 'flag': False } %}
            {%- for class in client_classes %}
                {%- if add_preceding_comma.flag -%},{%- endif -%}
                {%- set _dummy = add_preceding_comma.update({'flag': True}) %}
            {
                "name": "{{ class["name"] }}",
                "test": "{{ class["condition"] }}"
            }
            {%- endfor %}
        ]
        {%- endif %}
    }
}