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-rw-r--r--vnet/vnet/l2/l2_output.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/vnet/vnet/l2/l2_output.c b/vnet/vnet/l2/l2_output.c
index 85678caf6b7..f03796ebf76 100644
--- a/vnet/vnet/l2/l2_output.c
+++ b/vnet/vnet/l2/l2_output.c
@@ -634,6 +634,9 @@ l2output_create_output_node_mapping (vlib_main_t * vlib_main, vnet_main_t * vnet
node = vec_elt_at_index (output_node_index_vec, sw_if_index);
*node = next;
+ /* reset mapping bit, includes memory barrier */
+ __sync_fetch_and_and (&hw0->flags, ~VNET_HW_INTERFACE_FLAG_L2OUTPUT_MAPPED);
+
return next;
}