diff --git a/octopus-outside/main.go b/octopus-outside/main.go
index 01a4aac..e6658f9 100644
--- a/octopus-outside/main.go
+++ b/octopus-outside/main.go
@@ -180,7 +180,12 @@ func getSubnetIPInfo(ip net.IP, verbose bool) (gw net.IP, cidr uint64, linkname
 			if verbose {
 				fmt.Printf("     routing table %s\n", route.String())
 			}
-			if route.Dst.Contains(ip) {
+
+			if route.Dst == nil {
+				if verbose {
+					fmt.Printf("      - default gateway : no one!\n")
+				}
+			} else if route.Dst.Contains(ip) {
 				if verbose {
 					fmt.Printf("      - matched routing role : %s\n", route.String())
 				}
@@ -191,13 +196,21 @@ func getSubnetIPInfo(ip net.IP, verbose bool) (gw net.IP, cidr uint64, linkname
 			}
 		}
 
+		if matchedRoute == nil {
+			if verbose {
+				fmt.Println("    - cannot getting routing rule")
+				fmt.Println("  abandon this interface ")
+			}
+			continue
+		}
 		if cidrData, err := getCidr(*matchedRoute.Dst); err == nil {
 			cidr = cidrData
 			if verbose {
 				fmt.Printf("     interface have a subnet routing rule. gateway: %s", matchedRoute)
 				fmt.Println(" ok! matched ")
 			}
-			gw, cidr, linkname = matchedRoute.Gw, cidrData, attrs.Name
+			gw, cidr, linkname = matchedRoute.Src, cidrData, attrs.Name
+			break
 		} else if verbose {
 			fmt.Printf("    - cannot getting netmask : %s", err)
 			fmt.Println("  abandon this interface ")
@@ -508,8 +521,8 @@ func main() {
 	option = append(option, fmt.Sprintf("--setenv=GATEWAY_ADDR=%s", gw.String()))
 	option = append(option, fmt.Sprintf("--machine=%s", nodeName))
 	option = append(option, fmt.Sprintf("--directory=%s", filepath.Join(nodePath, "merge")))
-	#        option = append(option, "--keep-unit", "--register=yes", "--settings=override", "--private-users=1354956800:65536", "--private-users-chown")
-	option = append(option, "--keep-unit", "--register=yes", "--settings=override")
+//        option = append(option, "--keep-unit", "--register=yes", "--settings=override", "--private-users=1354956800:65536", "--private-users-chown")
+        option = append(option, "--keep-unit", "--register=yes", "--settings=override")
 
 	for _, mountPoint := range config.MoundPoint {
 		if mountOption, err := mountPoint.Option(nodePath); err != nil {