[ns] Mobile IP test file doesn't work!!!

["mcw" <g8805@cs.nccu.edu.tw>]

Hi!

I run the tcl file "wireless-mip-test.tcl" in ns-2.1b8a, and the error message is as followed:

no value given for parameter "errproc" to "_o34"
    (Node/MobileNode add-interface line 1)
    invoked from within
"$node add-interface $chan $prop $opt(ll) $opt(mac)      $opt(ifq) $opt(ifqlen)
$opt(netif)  $opt(ant)"
    (procedure "create-dsr-bs-node" line 5)
    invoked from within
"create-$opt(rp)-bs-node $node $id"
    (procedure "create-base-station-node" line 21)
    invoked from within
"create-base-station-node 1.0.0"
    invoked from within
"set HA [create-base-station-node 1.0.0]"
    (file "wireless-mip-test.tcl" line 137)

How can I solve the problem?

regards

-Meng