Interpretation of Linked Unlinked and MA lines in the radsniff output

Hello! I would like to ask help with understanding the radsniff output as there are some lines I can not interpret. When I have run radsniff -W 1, I got the following output: ... Access-Request counters: Total : 66.000/s Linked : 64.000/s Unlinked : 0.000/s Access-Request latency: High : 1000.607ms Low : 0.260ms Average : 17.473ms MA : 23.723ms Access-Request retransmits & loss: RT (0) : 56.000/s ... I don't understand what is the difference between an Access-Request which is linked or unlinked. Can you explain this? And another question is: do you know what is the MA in the Access-Request latency? - Tamas Fekete