svn rev #23570: trunk/src/kdc/

[raeburn@MIT.EDU]

http://src.mit.edu/fisheye/changelog/krb5/?cs=23570
Commit By: raeburn
Log Message:
Ignore some routing messages indicating changes that don't affect our
set of local addresses.


Changed Files:
U   trunk/src/kdc/network.c
Modified: trunk/src/kdc/network.c
===================================================================
--- trunk/src/kdc/network.c	2010-01-03 03:00:19 UTC (rev 23569)
+++ trunk/src/kdc/network.c	2010-01-03 03:00:24 UTC (rev 23570)
@@ -846,6 +846,30 @@
         case RTM_IFINFO:
         case RTM_OLDADD:
         case RTM_OLDDEL:
+            /*
+             * Some flags indicate routing table updates that don't
+             * indicate local address changes.  They may come from
+             * redirects, or ARP, etc.
+             *
+             * This set of symbols is just an initial guess based on
+             * some messages observed in real life; working out which
+             * other flags also indicate messages we should ignore,
+             * and which flags are portable to all system and thus
+             * don't need to be conditionalized, is left as a future
+             * exercise.
+             */
+#ifdef RTF_DYNAMIC
+            if (rtm.rtm_flags & RTF_DYNAMIC)
+                break;
+#endif
+#ifdef RTF_CLONED
+            if (rtm.rtm_flags & RTF_CLONED)
+                break;
+#endif
+#ifdef RTF_LLINFO
+            if (rtm.rtm_flags & RTF_LLINFO)
+                break;
+#endif
 #if 0
             krb5_klog_syslog(LOG_DEBUG,
                              "network reconfiguration message (%s) received",