Skip link local addresses in bosch_shc discovery step (#57074)

homeassistant/components/bosch_shc/config_flow.py

@@ -187,16 +187,26 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
             return self.async_abort(reason="not_bosch_shc")
 
         try:
-            self.info = info = await self._get_info(discovery_info["host"])
+            hosts = (
+                discovery_info["host"]
+                if isinstance(discovery_info["host"], list)
+                else [discovery_info["host"]]
+            )
+            for host in hosts:
+                if host.startswith("169."):  # skip link local address
+                    continue
+                self.info = await self._get_info(host)
+                self.host = host
+            if self.host is None:
+                return self.async_abort(reason="cannot_connect")
         except SHCConnectionError:
             return self.async_abort(reason="cannot_connect")
 
         local_name = discovery_info["hostname"][:-1]
         node_name = local_name[: -len(".local")]
 
-        await self.async_set_unique_id(info["unique_id"])
+        await self.async_set_unique_id(self.info["unique_id"])
-        self._abort_if_unique_id_configured({CONF_HOST: discovery_info["host"]})
+        self._abort_if_unique_id_configured({CONF_HOST: self.host})
-        self.host = discovery_info["host"]
         self.context["title_placeholders"] = {"name": node_name}
         return await self.async_step_confirm_discovery()
 

tests/components/bosch_shc/test_config_flow.py

@@ -20,7 +20,7 @@ MOCK_SETTINGS = {
     "device": {"mac": "test-mac", "hostname": "test-host"},
 }
 DISCOVERY_INFO = {
-    "host": "1.1.1.1",
+    "host": ["169.1.1.1", "1.1.1.1"],
     "port": 0,
     "hostname": "shc012345.local.",
     "type": "_http._tcp.local.",
@@ -526,6 +526,28 @@ async def test_zeroconf_cannot_connect(hass, mock_zeroconf):
         assert result["reason"] == "cannot_connect"
 
 
+async def test_zeroconf_link_local(hass, mock_zeroconf):
+    """Test we get the form."""
+    DISCOVERY_INFO_LINK_LOCAL = {
+        "host": ["169.1.1.1"],
+        "port": 0,
+        "hostname": "shc012345.local.",
+        "type": "_http._tcp.local.",
+        "name": "Bosch SHC [test-mac]._http._tcp.local.",
+    }
+
+    with patch(
+        "boschshcpy.session.SHCSession.mdns_info", side_effect=SHCConnectionError
+    ):
+        result = await hass.config_entries.flow.async_init(
+            DOMAIN,
+            data=DISCOVERY_INFO_LINK_LOCAL,
+            context={"source": config_entries.SOURCE_ZEROCONF},
+        )
+        assert result["type"] == "abort"
+        assert result["reason"] == "cannot_connect"
+
+
 async def test_zeroconf_not_bosch_shc(hass, mock_zeroconf):
     """Test we filter out non-bosch_shc devices."""
     result = await hass.config_entries.flow.async_init(