[knx] Metadata for discovery (openhab#16055)

* [knx] Metadata for discovery

Signed-off-by: Holger Friedrich <[email protected]>

bundles/org.openhab.binding.knx/src/main/resources/OH-INF/addon/addon.xml

@@ -26,6 +26,37 @@
 				</match-property>
 			</match-properties>
 		</discovery-method>
+		<discovery-method>
+			<service-type>ip</service-type>
+			<discovery-parameters>
+				<discovery-parameter>
+					<name>type</name>
+					<value>ipMulticast</value>
+				</discovery-parameter>
+				<discovery-parameter>
+					<name>destIp</name>
+					<value>224.0.23.12</value>
+				</discovery-parameter>
+				<discovery-parameter>
+					<name>destPort</name>
+					<value>3671</value>
+				</discovery-parameter>
+				<discovery-parameter>
+					<name>request</name>
+					<value>0x06 0x10 0x02 0x01 0x00 0x0e 0x08 0x01 $srcIp $srcPort</value>
+				</discovery-parameter>
+				<discovery-parameter>
+					<name>timeoutMs</name>
+					<value>5000</value>
+				</discovery-parameter>
+			</discovery-parameters>
+			<match-properties>
+				<match-property>
+					<name>response</name>
+					<regex>.*</regex>
+				</match-property>
+			</match-properties>
+		</discovery-method>
 	</discovery-methods>
 
 </addon:addon>