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[ns] Pcap/BPF network object in NS emulation



Hi, NS experts:
   May I know: is the packet filter of
"Network/Pcap/Live" able to filter only the telnet or
ftp packet?
e.g.
set bpf [new Network/Pcap/Live]
bpf filter "tcp"

in the above the filter only captures tcp packet? How
to set the filter to capture only the telnet or ftp
packets? Can anybody tell me?

Thanks

Best Regards,
Lao Yu

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