diff --git a/src/olsr/test/bug780-0-0.pcap b/src/olsr/test/bug780-0-0.pcap
index 92d5ee5b7..5f136bbd2 100644
Binary files a/src/olsr/test/bug780-0-0.pcap and b/src/olsr/test/bug780-0-0.pcap differ
diff --git a/src/olsr/test/bug780-1-0.pcap b/src/olsr/test/bug780-1-0.pcap
index 32b5059ef..e6a8557a7 100644
Binary files a/src/olsr/test/bug780-1-0.pcap and b/src/olsr/test/bug780-1-0.pcap differ
diff --git a/src/olsr/test/bug780-2-0.pcap b/src/olsr/test/bug780-2-0.pcap
index fe589126d..dac81a25d 100644
Binary files a/src/olsr/test/bug780-2-0.pcap and b/src/olsr/test/bug780-2-0.pcap differ
diff --git a/src/olsr/test/bug780-test.cc b/src/olsr/test/bug780-test.cc
index 0eb79d9e0..823d540dc 100644
--- a/src/olsr/test/bug780-test.cc
+++ b/src/olsr/test/bug780-test.cc
@@ -15,6 +15,12 @@
  *
  */
 
+// OLSR was observed to not converge in simple 3-nodes varying topology.
+// https://www.nsnam.org/bugzilla/show_bug.cgi?id=780
+// tcpdump -r bug780-0-0.pcap -nn -tt icmp | wc  
+// should show about 395 packets; there is a ping outage from time
+// 123-127 due to the mobility.
+
 #include <fstream>
 #include <iostream>