[ns] Diffserv in mobiwan

[Aris Suyudi]

Hi NS-users,

I want to implement diffserv in wireless environment, especially with
mobiwan. can we implement diffserv in mobiwan ? 
I already try to make simple wireless in diffserv environement, but
everything I do, I always get message : 
Segmentation fault

My topology is very simple :

0 ==== 0 ==== 0 ==== 0 ==== 0
CN     BS1    R1     R2    MN
      (edge) (core) (edge)

is there any options to set BS(base station) to be edge router (radio
edge router)

Is somebody has done implement diffserv in mobiwan ..? please share your
expertise and your experience ... please :) 

Thanks in advance

Aris Suyudi