[ns] operation in internal node

[nichunsheng@263.net]

hi all,
 I want to know if packet can be changed before it gets to the dst.
In command method: I set daddr() of hdr_ip, then send the pkt.
In recv method: I change the daddr() value and send to the other dst.
The pkt gets to the dst in command.
 
Can I change the daddr() before the pkt reach the dst and direct to the other dst?
Is the method correct?

what's the difference between daddr() and dst(), 
send(p,0) and target_->recv(p,(Handler*)0)?

thanks in advance.
 



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