hi all, i am getting the following make error while incorporating Nortel diffserv in ns2.1b6. dsPolicy.cc: In method `int Policy::mark(class Packet *)': dsPolicy.cc:532: no match for `ns_addr_tag & >> int' dsPolicy.cc:532: no match for `ns_addr_tag & >> int' make: *** [dsPolicy.o] Error 1 have anyone come across this earlier??please let me know... thanks Renjish