Dear Seniors According to tcl/mcast/DM.tcl, PruneTimeout od DM is set 0.5 second by default. According to DVMRPv3, default parameters are set as Probe Interval 10 Prune Lifetime variable (less than 2 hours) Prune Retransmission Time 3 with exp.back-off Which one matchs PruneTimeout ? I'd like to change the value with the real-world default. Thanks in Advance Jiwoong Lee @ KAIST