diff --git a/main/common/const.go b/main/common/const.go
index 61c780e..3b8b88e 100644
--- a/main/common/const.go
+++ b/main/common/const.go
@@ -31,5 +31,7 @@ var (
 )
 
 func init() {
-	ExternalIPv6, _ = getExternalIPv6Addr()
+	if ext, err := getExternalIPv6Addr(); err != nil {
+		ExternalIPv6 = append(ExternalIPv6, ext...)
+	}
 }
diff --git a/main/proxies/tproxy/tproxy.go b/main/proxies/tproxy/tproxy.go
index d04e289..0fb6cd7 100644
--- a/main/proxies/tproxy/tproxy.go
+++ b/main/proxies/tproxy/tproxy.go
@@ -14,7 +14,7 @@ const tagTproxy = "tproxy"
 var useDummy bool
 
 func init() {
-	if common.ExternalIPv6 != nil && common.CheckIPv6Connection() {
+	if len(common.ExternalIPv6) > 0 {
 		useDummy = false
 	} else {
 		useDummy = true