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-rw-r--r--src/plugins/arping/arping.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/plugins/arping/arping.c b/src/plugins/arping/arping.c
index 14f92589ea7..a446c259d44 100644
--- a/src/plugins/arping/arping.c
+++ b/src/plugins/arping/arping.c
@@ -554,7 +554,8 @@ arping_neighbor_probe_dst (vlib_main_t *vm, arping_args_t *args)
arping_intf_t aif;
/* Disallow multiple sends on the same interface for now. Who needs it? */
- if (am->interfaces && (am->interfaces[args->sw_if_index] != 0))
+ if ((vec_len (am->interfaces) > args->sw_if_index) &&
+ (am->interfaces[args->sw_if_index] != 0))
{
error = clib_error_return (
0, "arping command is in progress for the same interface. "