Now that wheezy's been released -- without the patch I submitted over a
year ago -- I have to fix all of my machines again, so I've respun the
patch, and here it is. Not that I have a great deal of hope that
submitting it here will actually cause anything to happen.
Index: bird-1.3.7/nest/iface.c
===================================================================
--- bird-1.3.7.orig/nest/iface.c 2013-05-06 11:35:21.000000000 +0100
+++ bird-1.3.7/nest/iface.c 2013-05-06 11:37:13.000000000 +0100
@@ -289,7 +289,7 @@
struct iface *
if_update(struct iface *new)
{
- struct iface *i;
+ struct iface *i, *j, *jj;
unsigned c;
WALK_LIST(i, iface_list)
@@ -324,6 +324,26 @@
init_list(&i->neighbors);
i->flags |= IF_UPDATED | IF_TMP_DOWN; /* Tmp down as we don't
have addresses yet */
add_tail(&iface_list, &i->n);
+
+ /* If we're unlucky then what just happened is that an interface had its
+ * name changed. In that case, we've just invented a new iface node with
+ * the new name, but with the same index number as an existing node, and
+ * we've just arranged so that a search by index will find the old node and
+ * not the new one. This isn't good, so trawl through the list again,
+ * picking out nodes with colliding indices and moving them to the end of
+ * the list.
+ */
+ WALK_LIST_DELSAFE(j, jj, iface_list)
+ {
+ if (i == j)
+ break;
+ else if (i->index == j->index)
+ {
+ rem_node(&j->n);
+ add_tail(&iface_list, &j->n);
+ }
+ }
+
return i;
}
-- [mdw]
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