3.2.6.1 Per-Responder Response Timer Expiry

When a Per-Responder Response Timer fires, the mapper MUST retransmit the pended request frame (the sequence number MUST be unchanged), and the timer MUST be restarted in that case.

The mapper MAY<11> give up retrying communication with the responder if the timer has fired more than once. If the mapper opts to continue with the topology discovery tests, it SHOULD NOT communicate with this responder for the duration of the discovery process since the sequence numbering is likely tainted, and the responder will likely not respond.