commit b13c1d9299d6426f48f074545f3e403e5a9b8a61
author Christian Franke <chris@opensourcerouting.org> Thu Dec 13 16:11:16 2012 +0100
committer David Lamparter <equinox@opensourcerouting.org> Tue Mar 18 08:45:20 2014 +0100
tree b313288f60c8d76a16e4f9f1796e934c0c8fefc0
parent d9628728e0924ae13ef6e8f8a67a2c9802745184

ospf6d: handle missing link local address more gracefully

ospf6 can't run on an interface without a link local address.
Don't start the state machine when an interface comes up without
such an ip and bring it up later, when a usable link local
address is added.

Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>

ospf6d/ospf6_interface.c

diff --git a/ospf6d/ospf6_interface.c b/ospf6d/ospf6_interface.c
index d9d2d03..8d42764 100644
--- a/ospf6d/ospf6_interface.c
+++ b/ospf6d/ospf6_interface.c
@@ -287,8 +287,7 @@
     }
 
   /* interface start */
-  if (oi->area)
-    thread_add_event (master, interface_up, oi, 0);
+  ospf6_interface_state_update(oi->interface);
 }
 
 void
@@ -327,7 +326,9 @@
   if (CHECK_FLAG (oi->flag, OSPF6_INTERFACE_DISABLE))
     return;
 
-  if (if_is_operative (ifp))
+  if (if_is_operative (ifp)
+      && (ospf6_interface_get_linklocal_address(oi->interface)
+          || if_is_loopback(oi->interface)))
     thread_add_event (master, interface_up, oi, 0);
   else
     thread_add_event (master, interface_down, oi, 0);
@@ -647,6 +648,16 @@
       return 0;
     }
 
+  /* check interface has a link-local address */
+  if (! (ospf6_interface_get_linklocal_address(oi->interface)
+         || if_is_loopback(oi->interface)))
+    {
+      if (IS_OSPF6_DEBUG_INTERFACE)
+	zlog_debug ("Interface %s has no link local address, can't execute [InterfaceUp]",
+		    oi->interface->name);
+	return 0;
+    }
+
   /* if already enabled, do nothing */
   if (oi->state > OSPF6_INTERFACE_DOWN)
     {