ip: check if interface has link-local address (addition)

[vpp.git] / src / vnet / ip / ip_sas.c

diff --git a/src/vnet/ip/ip_sas.c b/src/vnet/ip/ip_sas.c
index 7d3632d..0fc2617 100644 (file)
--- a/src/vnet/ip/ip_sas.c
+++ b/src/vnet/ip/ip_sas.c
@@ -80,7 +80,12 @@ ip6_sas_by_sw_if_index (u32 sw_if_index, const ip6_address_t *dst,
   if (ip6_address_is_link_local_unicast (dst) ||
       dst->as_u32[0] == clib_host_to_net_u32 (0xff020000))
     {
-      ip6_address_copy (src, ip6_get_link_local_address (sw_if_index));
+      const ip6_address_t *ll = ip6_get_link_local_address (sw_if_index);
+      if (NULL == ll)
+       {
+         return false;
+       }
+      ip6_address_copy (src, ll);
       return true;
     }