From 8d7c5aa92414661d1506e61d4b84c77292d205ad Mon Sep 17 00:00:00 2001
From: bingwang <bingwang@microsoft.com>
Date: Fri, 14 Aug 2020 00:33:24 -0700
Subject: [PATCH] Fix exception in fdb.py caused by IPv6 Address.

PR #1982 added IPv6 address to vlan interface, which caused
regression in test_fdb_mac_expire. This commit is to address this issue.
---
 tests/fdb/files/fdb.j2 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/fdb/files/fdb.j2 b/tests/fdb/files/fdb.j2
index 6c0b7c79615..d2ffa91fd40 100644
--- a/tests/fdb/files/fdb.j2
+++ b/tests/fdb/files/fdb.j2
@@ -1,3 +1,5 @@
 {% for vlan in minigraph_vlan_interfaces %}
+{% if vlan['addr'] | ipv4 %}
 {{ vlan['subnet'] }} {% for ifname in minigraph_vlans[vlan['attachto']]['members'] %} {{ minigraph_port_indices[ifname] }} {% endfor %}
+{% endif %}
 {% endfor %}