I've fixed the problem with DM (pimdm mode) in case you want to try it. Here is the diff: diff -r1.20 DM.tcl 99c99 < --- > 107a108 > return 0; #drop this packet Paul WHITE <P.White@cs.ucl.ac.uk> writes: > Yuri, > > I've just tried your tip(DM set CacheMissMode dvmrp) and it works fine > > Many thanks > > Paul