From: Daniel Walton <dwalton@cumulusnetworks.com>
Date: Mon, 14 Dec 2015 19:40:27 +0000 (+0000)
Subject: zebra: Crash upon disabling a link
X-Git-Tag: frr-2.0-rc1~1166
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=ca208d065c064692a334dff8612b7049475d4214;p=mirror%2Ffrr.git

zebra: Crash upon disabling a link

Signed-off-by: Daniel Walton <dwalton@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>

Ticket: CM-8514
---

diff --git a/zebra/interface.c b/zebra/interface.c
index cb4645c2f1..dcbc5a3b95 100644
--- a/zebra/interface.c
+++ b/zebra/interface.c
@@ -1770,6 +1770,9 @@ ipv6_address_configured (struct interface *ifp)
   struct connected *connected;
   struct listnode *node;
 
+  if (!ifp)
+    return 0;
+
   for (ALL_LIST_ELEMENTS_RO (ifp->connected, node, connected))
     if (CHECK_FLAG (connected->conf, ZEBRA_IFC_REAL) && (connected->address->family == AF_INET6))
       return 1;