Fix lifx homekit discoveries not being ignorable or updating the IP (#76825)

homeassistant/components/lifx/config_flow.py

@@ -119,18 +119,20 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
     ) -> FlowResult:
         """Confirm discovery."""
         assert self._discovered_device is not None
+        discovered = self._discovered_device
         _LOGGER.debug(
             "Confirming discovery: %s with serial %s",
-            self._discovered_device.label,
+            discovered.label,
             self.unique_id,
         )
         if user_input is not None or self._async_discovered_pending_migration():
-            return self._async_create_entry_from_device(self._discovered_device)
+            return self._async_create_entry_from_device(discovered)
 
+        self._abort_if_unique_id_configured(updates={CONF_HOST: discovered.ip_addr})
         self._set_confirm_only()
         placeholders = {
-            "label": self._discovered_device.label,
-            "host": self._discovered_device.ip_addr,
+            "label": discovered.label,
+            "host": discovered.ip_addr,
             "serial": self.unique_id,
         }
         self.context["title_placeholders"] = placeholders

tests/components/lifx/test_config_flow.py

@@ -466,21 +466,38 @@ async def test_discovered_by_dhcp_or_discovery_failed_to_get_device(hass, source
     assert result["reason"] == "cannot_connect"
 
 
-async def test_discovered_by_dhcp_updates_ip(hass):
+@pytest.mark.parametrize(
+    "source, data",
+    [
+        (
+            config_entries.SOURCE_DHCP,
+            dhcp.DhcpServiceInfo(ip=IP_ADDRESS, macaddress=MAC_ADDRESS, hostname=LABEL),
+        ),
+        (
+            config_entries.SOURCE_HOMEKIT,
+            zeroconf.ZeroconfServiceInfo(
+                host=IP_ADDRESS,
+                addresses=[IP_ADDRESS],
+                hostname=LABEL,
+                name=LABEL,
+                port=None,
+                properties={zeroconf.ATTR_PROPERTIES_ID: "any"},
+                type="mock_type",
+            ),
+        ),
+    ],
+)
+async def test_discovered_by_dhcp_or_homekit_updates_ip(hass, source, data):
     """Update host from dhcp."""
     config_entry = MockConfigEntry(
         domain=DOMAIN, data={CONF_HOST: "127.0.0.2"}, unique_id=SERIAL
     )
     config_entry.add_to_hass(hass)
-    with _patch_discovery(no_device=True), _patch_config_flow_try_connect(
-        no_device=True
-    ):
+    with _patch_discovery(), _patch_config_flow_try_connect():
         result = await hass.config_entries.flow.async_init(
             DOMAIN,
-            context={"source": config_entries.SOURCE_DHCP},
-            data=dhcp.DhcpServiceInfo(
-                ip=IP_ADDRESS, macaddress=MAC_ADDRESS, hostname=LABEL
-            ),
+            context={"source": source},
+            data=data,
         )
         await hass.async_block_till_done()
     assert result["type"] == FlowResultType.ABORT