[ns] Reply to a post

[KULDEEP SINGH]

Sir,
I have followed each and every step listed on your blog, I must admit
that the attack is very impressive, but I'm stuck at last step by
getting an error as shown:

num_nodes is set 7
INITIALIZE THE LIST xListHead
ns: _o107 hacker:
    (_o107 cmd line 1)
    invoked from within
"_o107 cmd hacker"
    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 $errorInfo
error "error when calling class $cls: $args" $..."
    (procedure "_o107" line 2)
    (SplitObject unknown line 2)
    invoked from within
"_o107 hacker"

Please guide me, how to remove this error, this error occurs when I
uncomment the line.

this is in reply to:
http://network-simulator-ns-2.7690.n7.nabble.com/Patch-for-Blackhole-Attack-in-ns-2-developed-td28766.html#a28907

Thank You
Kuldeep Singh