diff --git a/hosts/dialer.go b/hosts/dialer.go
index 22769ed1..70f300ea 100644
--- a/hosts/dialer.go
+++ b/hosts/dialer.go
@@ -51,6 +51,9 @@ func (d *dialer) Dial(network, addr string) (net.Conn, error) {
 }
 
 func (h *Host) TunnelUp() error {
+	if h.DClient != nil {
+		return nil
+	}
 	logrus.Infof("[ssh] Setup tunnel for host [%s]", h.Address)
 	key, err := checkEncryptedKey(h.SSHKey, h.SSHKeyPath)
 	if err != nil {