3.1.6.1 Negotiation Retransmission Timer

The negotiation retransmission timer is started by the initiator when it sends a message. Upon expiration of this timer, the initiator MUST retransmit the message and increment the retransmission counter. After seven retransmissions (tracked by the Retransmission timer context of the MM SA (section 3.1.1), the initiator MUST delete the state for the corresponding MM SA.