Sensor 'unknown_devices' only increases but never decreases

[basstp]

After a recent update of ha-edgeos (i sadly don't know which version i was using previously), the sensor 'unknown_devices' does not decrease any more.

Details

When a DHCP lease is given out, the sensor increases as it should (for example from 0 to 1). When the client leaves the network the sensor however stays at 1 and does not go back to 0. This is also true with multiple devices (the sensor goes from 1 to 2, but never back to 1).
I can however get the sensor back to the correct value by reloading the integration.

Currently using ha-edgeos 2.1.7, my edgerouter x is at version 2.0.9-hotfix.7

I already tried reinstalling ha-edgeos via HACS but that did not seem to help.

Debug logs

I poked around in the debug logs and found that the info seems to be retrieved correctly from the edgerouter, but the sensor 'unknown_devices' doesnt update correctly.

Here are some snippets from the debug log. I initially had 0 clients connected, then 1 client:

Snippet of debug log

...
        "dhcp_stats": {
          "dhcp-server-stats": {
            "TEMP-Main": {
              "pool_size": "100",
              "leased": "0",
              "available": "100"
            },
            "Gast-DHCP": {
              "pool_size": "20",
              "leased": "1",
              "available": "19"
            }
          }
        },
        "dhcp-leases": {
          "dhcp-server-leases": {
            "TEMP-Main": "",
            "Gast-DHCP": {
              "10.1.8.21": {
                "expiration": "2024/06/06 21:52:30",
                "pool": "Gast-DHCP",
                "mac": "**:**:**:**:**:**",
                "client-hostname": "*************"
              }
            }
          }
        },
        "lastUpdate": "2024-06-06T23:51:51.613939"

...

      "System": {
        "host-name": "edgerouterx",
        "time-zone": "Europe/Berlin",
        "ntp": {
          "0.ubnt.pool.ntp.org": null,
          "1.ubnt.pool.ntp.org": null,
          "2.ubnt.pool.ntp.org": null,
          "3.ubnt.pool.ntp.org": null
        },
        "hwnat": true,
        "dpi": true,
        "export": true,
        "dhcp-server-leases": 1,
        "level": "operator"
      }

...

          {
            "disabled": false,
            "disabled_by": null,
            "entity_category": null,
            "device_class": null,
            "original_device_class": null,
            "icon": null,
            "original_icon": "mdi:help-network-outline",
            "unit_of_measurement": "Devices",
            "state": {
              "entity_id": "sensor.edgerouterx_unknown_devices",
              "state": "1",
              "attributes": {
                "state_class": "measurement",
                "10.1.8.21": "**:**:**:**:**:** (*************)",
                "unit_of_measurement": "Devices",
                "icon": "mdi:help-network-outline",
                "friendly_name": "EDGEROUTERX Unknown Devices"
              },
              "last_changed": "2024-06-06T21:38:44.756282+00:00",
              "last_reported": "2024-06-06T21:38:44.756282+00:00",
              "last_updated": "2024-06-06T21:38:44.756282+00:00"
            }
          },
...

When the client disconnects I now should have 0 clients again, but the sensor still thinks the client is there:

Snippet of debug log

...
        "dhcp_stats": {
          "dhcp-server-stats": {
            "TEMP-Main": {
              "pool_size": "100",
              "leased": "0",
              "available": "100"
            },
            "Gast-DHCP": {
              "pool_size": "20",
              "leased": "0",
              "available": "20"
            }
          }
        },
        "dhcp-leases": {
          "dhcp-server-leases": {
            "TEMP-Main": "",
            "Gast-DHCP": ""
          }
        },
        "lastUpdate": "2024-06-06T23:53:52.590464"

...

      "System": {
        "host-name": "edgerouterx",
        "time-zone": "Europe/Berlin",
        "ntp": {
          "0.ubnt.pool.ntp.org": null,
          "1.ubnt.pool.ntp.org": null,
          "2.ubnt.pool.ntp.org": null,
          "3.ubnt.pool.ntp.org": null
        },
        "hwnat": true,
        "dpi": true,
        "export": true,
        "dhcp-server-leases": 0,
        "level": "operator"
      }

...

          {
            "disabled": false,
            "disabled_by": null,
            "entity_category": null,
            "device_class": null,
            "original_device_class": null,
            "icon": null,
            "original_icon": "mdi:help-network-outline",
            "unit_of_measurement": "Devices",
            "state": {
              "entity_id": "sensor.edgerouterx_unknown_devices",
              "state": "1",
              "attributes": {
                "state_class": "measurement",
                "10.1.8.21": "**:**:**:**:**:** (*************)",
                "unit_of_measurement": "Devices",
                "icon": "mdi:help-network-outline",
                "friendly_name": "EDGEROUTERX Unknown Devices"
              },
              "last_changed": "2024-06-06T21:38:44.756282+00:00",
              "last_reported": "2024-06-06T21:38:44.756282+00:00",
              "last_updated": "2024-06-06T21:38:44.756282+00:00"
            }
          },
...

(I have replaced my MAC address and hostname with *** for privacy reasons.)
You can see that the information is retrieved correctly:

• leased changes from 1 back to 0
• the client is no longer listed in dhcp-leases
• dhcp-server-leases changes from 1 back to 0

However the sensor.edgerouterx_unknown_devices still shows the client.

---

I hove I have given enough information to hunt down this bug. Thanks! :)

[Mark79864]

Same issue I'm having. Glad I'm not the only one.

[illuzn]

Fixed in #156