From: Artem Glazychev <artem.glazychev@xored.com>
Date: Mon, 23 Aug 2021 06:35:31 +0000 (+0700)
Subject: ip: check if interface has link-local address (addition)
X-Git-Tag: v22.06-rc0~443
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=5b5b89a046dff506756a2d56a5596009858570e8;p=vpp.git

ip: check if interface has link-local address (addition)
previous - b31fbc47f5fcf8234c757558d7b0285348774086

Type: fix

Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
Change-Id: I7ea2d693d3ad5bf41ece066b3511fbfa156c1e4b
---

diff --git a/src/vnet/ip/ip_sas.c b/src/vnet/ip/ip_sas.c
index 7d3632d95ed..0fc261724f1 100644
--- 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;
     }