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Sending Link State Acknowledgments
All LSAcks sent multicast

LSA Acknowledgement rules:
New LSA: Send a delayed ACK on each MANET interface, unless the LSA is flooded out the interface.
Duplicate multicast LSA: do not send an LSAck.
Duplicate unicast LSA:
If the router is a (Backup) MDR, send an immediate ACK out the receiving interface.
If the router is an MDR Other, send a delayed ACK out the receiving interface.
PPT Version