diff --git a/main.go b/main.go
index 8fd3b5b..0c26f61 100644
--- a/main.go
+++ b/main.go
@@ -27,7 +27,7 @@ import (
 )
 
 // VERSION .
-const VERSION = "0.6.7"
+const VERSION = "0.6.8"
 
 func main() {
 	// read configs
diff --git a/proxy/direct.go b/proxy/direct.go
index 8072cbf..38e11e4 100644
--- a/proxy/direct.go
+++ b/proxy/direct.go
@@ -55,6 +55,11 @@ func (d *Direct) Dial(network, addr string) (c net.Conn, err error) {
 		}
 	}
 
+	// no ip available (so no dials made), maybe the interface link is down
+	if c == nil && err == nil {
+		err = errors.New("dial failed, maybe the interface link is down, please check it")
+	}
+
 	return
 }
 
@@ -113,9 +118,7 @@ func (d *Direct) IFaceIPs() (ips []net.IP) {
 	}
 
 	for _, ipnet := range ipnets {
-		if ip := ipnet.(*net.IPNet).IP; !ip.IsLinkLocalUnicast() {
-			ips = append(ips, ip)
-		}
+		ips = append(ips, ipnet.(*net.IPNet).IP) //!ip.IsLinkLocalUnicast()
 	}
 
 	return