Backend now determines the hostname by subtracting the domain

ddns.go

@@ -37,14 +37,22 @@ func RunBackend() {
 		parts := strings.Split(string(line), "\t")
 		if len(parts) == 6 {
 			query_name := parts[1]
-			fqdn_parts := strings.Split(query_name, ".")
+
+			// get the host part of the fqdn
+			// pi.d.example.org -> pi
+			hostname := ""
+			if strings.HasSuffix(query_name, DdnsDomain) {
+				hostname = query_name[:len(query_name)-len(DdnsDomain)]
+			}
 
 			query_class := parts[2]
+			query_type := parts[3]
 			query_id := parts[4]
 
-			if len(fqdn_parts) > 0 {
-				if conn.HostExist(fqdn_parts[0]) {
-					host := conn.GetHost(fqdn_parts[0])
+			if hostname != "" {
+				// check for existance and create response
+				if conn.HostExist(hostname) {
+					host := conn.GetHost(hostname)
 
 					record := "A"
 					if !host.IsIPv4() {