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-rw-r--r--src/vnet/interface_api.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/src/vnet/interface_api.c b/src/vnet/interface_api.c
index 44798c8b33b..39c062714bf 100644
--- a/src/vnet/interface_api.c
+++ b/src/vnet/interface_api.c
@@ -433,6 +433,7 @@ static void vl_api_sw_interface_set_unnumbered_t_handler
vnet_main_t *vnm = vnet_get_main ();
u32 sw_if_index = ntohl (mp->sw_if_index);
u32 unnumbered_sw_if_index = ntohl (mp->unnumbered_sw_if_index);
+ u32 was_unnum;
/*
* The API message field names are backwards from
@@ -454,6 +455,7 @@ static void vl_api_sw_interface_set_unnumbered_t_handler
vnet_sw_interface_t *si =
vnet_get_sw_interface (vnm, unnumbered_sw_if_index);
+ was_unnum = (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED);
if (mp->is_add)
{
@@ -480,8 +482,12 @@ static void vl_api_sw_interface_set_unnumbered_t_handler
ip6_main.lookup_main.if_address_pool_index_by_sw_if_index
[unnumbered_sw_if_index] = ~0;
}
- ip4_sw_interface_enable_disable (unnumbered_sw_if_index, mp->is_add);
- ip6_sw_interface_enable_disable (unnumbered_sw_if_index, mp->is_add);
+
+ if (was_unnum != (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED))
+ {
+ ip4_sw_interface_enable_disable (unnumbered_sw_if_index, mp->is_add);
+ ip6_sw_interface_enable_disable (unnumbered_sw_if_index, mp->is_add);
+ }
done:
REPLY_MACRO (VL_API_SW_INTERFACE_SET_UNNUMBERED_REPLY);