Re: [ns] NSE failes to foward packet to second NIC card while running ping demo under Linux 2.2

[John Heidemann <johnh@ISI.EDU>]

>To All NSE Users,
>
>I have a new problem running nse from ns-2-snapshot-20010223 on Linux 2.2
>Kernel 2.2.5.  While running your pingdemo test script I get this warning
>and packets do not get sent on second NIC card:
>
>TapAgent(_o14): sendpkt (0x856e568,64) 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.

That error occurs in trying to forward a packet out an interface.
Is it possible that you dind't properly configure that interface/tap
agent?

Emulation should work under Linux, but we last used it there some time
ago (more than 6 months) so it's not impossible that there's some kind
of bit-rot.  But the first thing I'd check is that things are properly
initialized.

   -John Heidemann