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-rw-r--r--proto/babel/babel.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/proto/babel/babel.c b/proto/babel/babel.c
index a20bd724..25081c3b 100644
--- a/proto/babel/babel.c
+++ b/proto/babel/babel.c
@@ -1308,9 +1308,10 @@ babel_handle_update(union babel_msg *m, struct babel_iface *ifa)
/*
* RFC section 3.8.2.2 - Dealing with unfeasible updates. Generate a one-off
- * (not retransmitted) unicast seqno request to the originator of this update
+ * (not retransmitted) unicast seqno request to the originator of this update.
+ * Note: !feasible -> s exists, check for 's' is just for clarity / safety.
*/
- if (!feasible && (metric != BABEL_INFINITY) &&
+ if (!feasible && s && (metric != BABEL_INFINITY) &&
(!best || (r == best) || (metric < best->metric)))
babel_generate_seqno_request(p, e, s->router_id, s->seqno + 1, nbr);