[ns] error black hole attack.

Hello Friend, I am working in "BLACKHOLE ATTACK IN AODV ROUTING PROTOCOL". I have implemented blockhole attack in ns-2. but i have found following errors. Please help me. blackholeaodv/blackholeaodv.o: In function `blackholeAODV::blackholeAODV(int)': blackholeaodv.cc:(.text+0x3af): undefined refe

[ns] Error when simultating black hole attack

Hello Sir, I have found following error during simulation. (_o14 cmd line 1) invoked from within "_o14 cmd addr" invoked from within "catch "$self cmd $args" ret" invoked from within "if [catch "$self cmd $args" ret] { set cls [$self info class] global errorInfo set savedInfo $error