Hi!! Gentlemen!! If i install ns-allinone-2.1b6 on my Redhat 6.0, should i have to also install cmu-extension for my wireless simulation? If it needs, is its installion sequence same as cmu's manual's description ? because i found similar files as cmu's files in ns-2.1b6-current. but after installing and re-run past programs, it has core down. may any share his exerience? thanks regards