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-rw-r--r--ospfd/ospf_nsm.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/ospfd/ospf_nsm.c b/ospfd/ospf_nsm.c
index c5a55367..73ed088f 100644
--- a/ospfd/ospf_nsm.c
+++ b/ospfd/ospf_nsm.c
@@ -878,6 +878,22 @@ ospf_nsm_event (struct thread *thread)
if (! next_state)
next_state = NSM [nbr->state][event].next_state;
+ else if (NSM [nbr->state][event].next_state != NSM_DependUpon)
+ {
+ /* There's a mismatch between the FSM tables and what an FSM
+ * action/state-change function returned. State changes which
+ * do not have conditional/DependUpon next-states should not
+ * try set next_state.
+ */
+ zlog_warn ("NSM[%s:%s]: %s (%s): "
+ "Warning: action tried to change next_state to %s",
+ IF_NAME (oi), inet_ntoa (nbr->router_id),
+ LOOKUP (ospf_nsm_state_msg, nbr->state),
+ ospf_nsm_event_str [event],
+ LOOKUP (ospf_nsm_state_msg, next_state));
+
+ next_state = NSM [nbr->state][event].next_state;
+ }
if (IS_DEBUG_OSPF (nsm, NSM_EVENTS))
zlog_debug ("NSM[%s:%s]: %s (%s)", IF_NAME (oi),