Attention ad-hoc routing protocols developpers! the FILO interface queue has survived the version change, you will still find it in the priqueue.cc of Ns-2.1b7. http://www.isi.edu/nsnam/archive/ns-users/webarch/2000/msg03863.html http://www.isi.edu/nsnam/archive/ns-users/webarch/2000/msg03870.html -- Robin