Hello, Something strange about the tcp-int.tcl, when I run the latest version of ns (ns-2.1b3) I get: nam: unknown event at offset 35 in `out.nam' nam: `A -t * -n 1 -p 0 -o 255 -c 15 -a 1 ' while the ns-2.1b2 version works fine. Does anybody have this too? -- Nesrine Chaher Dea Networks and Distributed Systems MISTRAL - INRIA. 2004, Route des Lucioles FRANCE