Number of DATA chunks retransmissions to this specific IP
address. When T3-rtx expires, the DATA chunk that triggered
the T3 timer will be re-sent according to the retransmissions
rules. Every DATA chunk that is included in a SCTP packet and
was transmitted to this specific IP address before, will be
included in this counter.
Discontinuities in the value of this counter can occur at re-
initialization of the management system, and at other times as
indicated by the value of sctpAssocDiscontinuityTime.