[ns] bug in Wireless3.tcl?

[Guang Zeng <zeng.guang@verizon.net>]

Hi��
I download the "wireless3.tcl" in the ns tutorial,
but when I run "ns wireless3.tcl" in freebsd, the system indicated 
there was a mistake:

error:"__FAILED_SHADOW_OBJECT"
..........
..........
line 151: set HAaddress [AddrParams set-hieraddr [$HA node-addr]]

Anyone has faced same sitution?

BTW, if I changed the "set-hieraddr" to "addr2id", it can work?
BUt I do not know what these parameters actually mean.

Guang Zeng
Department of EE
Columbia University