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-rw-r--r--src/plugins/linux-cp/lcp_interface.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/plugins/linux-cp/lcp_interface.c b/src/plugins/linux-cp/lcp_interface.c
index fab048a7773..921dccf5519 100644
--- a/src/plugins/linux-cp/lcp_interface.c
+++ b/src/plugins/linux-cp/lcp_interface.c
@@ -782,6 +782,15 @@ 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;
const lcp_itf_pair_t *lip;
+ index_t lipi;
+
+ lipi = lcp_itf_pair_find_by_phy (phy_sw_if_index);
+
+ if (lipi != INDEX_INVALID)
+ {
+ LCP_ITF_PAIR_ERR ("pair_create: already created");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
if (!vnet_sw_if_index_is_api_valid (phy_sw_if_index))
{