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-rw-r--r--src/vnet/tcp/tcp_input.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index fc1aff40747..94dcaaf9eda 100644
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -2727,7 +2727,7 @@ tcp46_rcv_process_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
}
/* Make sure the ack is exactly right */
- if (tc0->rcv_nxt != vnet_buffer (b0)->tcp.seq_number)
+ if (tc0->rcv_nxt != vnet_buffer (b0)->tcp.seq_number || is_fin0)
{
error0 = TCP_ERROR_SEGMENT_INVALID;
tcp_send_reset_w_pkt (tc0, b0, is_ip4);