[ns] Emulation NSE fails to forward packet to second NIC card while running ping demo under Red Hat 7.0 & 5.2 Linux

[Swigert Scott S Contr AFRL/HEA <Scott.Swigert@williams.af.mil>]

To All NSE emulation Users,

I still have a problem running nse from ns-2-snapshot-20010223 on Red Hat
Linux 7.0.  
This is the same problem I encountered running under Red Hat Linux 5.2 that
I submitted to the user group several weeks ago.  It was suggested that I
upgrade to Red Hat 7.0.  The results were the same.  While running your
pingdemo test script I get this warning and packets do not get sent on
second NIC card:

ArpAgent (_013): sendpkt (0x84503b0,64): Transport endpoint is not connected
write to pcap fd: Transport endpoint is not connected  

I have also written my own simple script using the bpf network to read from
one Ethernet card and an IP/UDP network to write out to another Ethernet
card.  The result is the bpf network is reading packets forwarding them to
the IP/UDP node but dose not get sent on the second Ethernet card.  The
warning I get is 

TapAgent(_o14): sendpkt (0x8563558,46) Transport endpoint is not connected
UDPIPNetwork(_o12) send failed: Transport endpoint is not connected

Got any suggestion or help.  Attached is the tcl file I used.

PINGDEMO.OUT

PINGDEMO.TCL