Pakete:

• Debian 12: kea-dhcp4-server

/etc/kea/kea-dhcp4.conf

{
    "Dhcp4": {
        "interfaces-config": {
            "interfaces": [ "ens3" ]
        },
 
        "control-socket": {
            "socket-type": "unix",
            "socket-name": "/run/kea/kea4-ctrl-socket"
        },
        "host-reservation-identifiers": [  "hw-address" ], // wird schneller verarbeitet als der default, sinnvoll wenn man client id/hostname, duid usw. nicht nutzt
        "subnet4": [
            {
                "subnet": "192.168.242.0/24",
                "reservation-mode": "out-of-pool", // oder "disabled"  // beides wird schneller verarbeitet als der default "all"
                // "pools": [ { "pool": "192.168.242.128 - 192.168.242.191" } ],
 
                "option-data": [
                    {
                        "name": "routers",
                        "data": "192.168.242.1"
                    },
                    {
                        "name": "domain-name-servers",
                        "data": "192.168.1.5"
                    },
                    {
                        "name": "domain-search",
                        "data": "linuxhotel.de"
                    }
                ],
 
                "reservations": [
                    {
                        "hw-address": "52:54:00:00:01:02",
                        "ip-address": "192.168.242.12"
                    }
                ]
            }
        ],
 
        "loggers": [
        {
            "name": "kea-dhcp4",
            "severity": "INFO",
            "output_options": [
                {
                    "output": "stdout",
                    "pattern": "%-5p %m\n"
                }
            ]
        }
      ]
    }
}

kea-dhcp4 -t /etc/kea/kea-dhcp4.conf
systemctl restart kea-dhcp4-server.service

bzw.

systemctl kill --signal=HUP kea-dhcp4-server.service

Prüfen, ob kea läuft:

lsof -Pni :67
systemctl status kea-dhcp4-server.service
journalctl -fu kea-dhcp4-server.service

Reload für kea-dhcp4 aktivieren:

systemctl edit kea-dhcp4-server.service

/etc/systemd/system/kea-dhcp4-server.service.d/exec_reload.conf

[Service]
ExecReload=kill -HUP $MAINPID

Pakete:

• Debian 12: kea-ctrl-agent curl jq

Aktuelle dhcp4-Konfiguration ausgeben:

curl -X POST -H "Content-Type: application/json" -d '{ "command": "config-get", "service": [ "dhcp4" ] }' http://127.0.0.1:8000/ | jq