[ns] ns-2.1b8 make problem !! :~~

[koiama <m8903@cn.ee.ccu.edu.tw>]

  I have read the fix article.

But I type "make" , error is :

ldp.cc: In method `void LDPAgent::recv(Packet *, Handler *)':
ldp.cc:546: `off_ip_' undeclared (first use this function)
ldp.cc:546: (Each undeclared identifier is reported only once
ldp.cc:546: for each function it appears in.)
make: *** [ldp.o] Error 1

please HELP me....  



Regards,
Ken Fu