Hi.
There is no "SINKHOLEAODV" in ns2 by default.
? Did you do any changes to ns-2.35/"c++ code" ?
About your ns-lib.tcl :
$ grep -ni sinkhole ns-lib.tcl
633: # ADDING SINKHOLE AGENT
634: SINKHOLEAODV{
636: set ragent [$self create-sinkholeaodv-agent $node]
868:# sinkholeAODV
869:Simulator instproc create-sinkholeaodv-agent { node } {
871:set ragent [new Agent/sinkholeAODV [$node node-addr]]
.... so these lines are different from the default ns-lib.tcl
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P.S.: There is sinkhole for `NetSim´