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-rw-r--r--src/vnet/ip/ip4_forward.c5
-rw-r--r--src/vnet/ip/ip6_forward.c5
2 files changed, 8 insertions, 2 deletions
diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index 5cd5e418fd6..055df637c7f 100644
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -655,7 +655,10 @@ ip4_add_del_interface_address_internal (vlib_main_t * vm,
error = vnet_sw_interface_supports_addressing (vnm, sw_if_index);
if (error)
- return error;
+ {
+ vnm->api_errno = VNET_API_ERROR_UNSUPPORTED;
+ return error;
+ }
ip4_addr_fib_init (&ip4_af, address,
vec_elt (im->fib_index_by_sw_if_index, sw_if_index));
diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c
index 8daf2614c15..d9c015f6fb4 100644
--- a/src/vnet/ip/ip6_forward.c
+++ b/src/vnet/ip/ip6_forward.c
@@ -310,7 +310,10 @@ ip6_add_del_interface_address (vlib_main_t * vm,
error = vnet_sw_interface_supports_addressing (vnm, sw_if_index);
if (error)
- return error;
+ {
+ vnm->api_errno = VNET_API_ERROR_UNSUPPORTED;
+ return error;
+ }
if (ip6_address_is_link_local_unicast (address))
{