From c8dc522fe9941d7a159740e9594be8e7ffee1a52 Mon Sep 17 00:00:00 2001
From: Pim van Pelt <pim@ipng.nl>
Date: Tue, 5 Mar 2024 18:26:43 +0100
Subject: [PATCH] Avoid creating a duplicate LIP
---
lcpng_interface.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/lcpng_interface.c b/lcpng_interface.c
index c27fb70..4e61f08 100644
--- a/lcpng_interface.c
+++ b/lcpng_interface.c
@@ -782,6 +782,14 @@ lcp_itf_pair_create (u32 phy_sw_if_index, u8 *host_if_name,
const vnet_sw_interface_t *sw;
const vnet_hw_interface_t *hw;
lcp_itf_pair_t *lip;
+ index_t lipi;
+
+ lipi = lcp_itf_pair_find_by_phy (phy_sw_if_index);
+ if (lipi != INDEX_INVALID)
+ {
+ LCP_IF_ERROR ("pair_create: already created");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
if (!vnet_sw_if_index_is_api_valid (phy_sw_if_index))
{