In the output of show ip eigrp events mean 11:26:25.579 Poison squashed: 172.16.0.27/32 reverseThanksDarren

What does dummies in the below output mean? Is a quiescent interface a good thing or bad ?#show ip eigrp top summIP-EIGRP Topology Table for AS(1)/IDHead serial 1, next serial 996077161412 routes, 0 pending replies, 6 dummiesIP-EIGRP enabled on 8 int...