diff --git a/forward.go b/forward.go
index bf807b04..863795cf 100644
--- a/forward.go
+++ b/forward.go
@@ -100,6 +100,7 @@ func handleUdpForwardTunnel(laddr, raddr *net.UDPAddr, rChan, wChan chan *gosock
 		}
 		break
 	}
+	defer tun.Close()
 
 	glog.V(LINFO).Infof("[udp] %s <-> %s", laddr, raddr)
 
diff --git a/main.go b/main.go
index df628b79..5f6e9900 100644
--- a/main.go
+++ b/main.go
@@ -19,7 +19,7 @@ const (
 )
 
 const (
-	Version = "2.1-dev"
+	Version = "2.1-rc1"
 )
 
 var (