diff --git a/lib/tun2/server.go b/lib/tun2/server.go
index 9fef581..0022c7b 100644
--- a/lib/tun2/server.go
+++ b/lib/tun2/server.go
@@ -164,6 +164,10 @@ func (s *Server) ListenAndServe() error {
 					panic(err)
 				}
 
+				ln.Log(c.F(), ln.F{
+					"action": "sending_ping",
+				})
+
 				stream, err := c.session.OpenStream()
 				if err != nil {
 					ln.Error(err)