diff --git a/l2tpns.c b/l2tpns.c
index 47c731b..cf2f00e 100644
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -1143,7 +1143,7 @@ static int can_kernel_accel(sessionidt s)
 		/* Disabled */
 		return 0;
 
-	if (session[s].bundle)
+	if (session[s].bundle != 0 && bundle[session[s].bundle].num_of_links > 1)
 		/* MPPP not supported yet */
 		return 0;
 
@@ -7659,7 +7659,12 @@ int sessionsetup(sessionidt s, tunnelidt t)
 		}
 	}
 
-	create_kernel_accel(s);
+	if (!session[s].bundle || (bundle[session[s].bundle].num_of_links == 1))
+		/* Just one session, can accelerate */
+		create_kernel_accel(s);
+	else if (session[s].bundle && bundle[session[s].bundle].num_of_links == 2)
+		/* Now several sessions, cannot accelerate the first session any more */
+		delete_kernel_accel(bundle[session[s].bundle].members[0]);
 
 	// no need to set a route for the same IP address of the bundle
 	if (!session[s].bundle || (bundle[session[s].bundle].num_of_links == 1))