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-rw-r--r--src/vnet/classify/vnet_classify.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/vnet/classify/vnet_classify.c b/src/vnet/classify/vnet_classify.c
index 7e239cc57a7..ca34eecc77f 100644
--- a/src/vnet/classify/vnet_classify.c
+++ b/src/vnet/classify/vnet_classify.c
@@ -1786,7 +1786,8 @@ classify_set_pcap_chain (vnet_classify_main_t * cm,
* Put the table index where device drivers can find them.
* This table index will be either a valid table or a ~0 to clear it.
*/
- cm->classify_table_index_by_sw_if_index[sw_if_index] = table_index;
+ if (vec_len (cm->classify_table_index_by_sw_if_index) > sw_if_index)
+ cm->classify_table_index_by_sw_if_index[sw_if_index] = table_index;
if (sw_if_index > 0)
{
vnet_hw_interface_t *hi;