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Endless FIN packets because ACK got lost

Dear all, some time ago I posted an issue at the ns-3-users group but did not receive feedback. I observed endless sending of FIN packets, because the ACK response got lost. I was able to create a minimum working example based on a modified tcp-bulk-send, see diff file. Tested a few minutes ago on ns-3-dev commit bef81760.

Execute ./waf --run "tcp-bulk-send --tracing=true --maxBytes=123"

(slightly) more information here: https://groups.google.com/forum/#!msg/ns-3-users/21CShisE8qg/gFCcRQ9PAwAJ

I'd be really happy if someone could comment on this. Thanks, Joerg

endlessFINbecauseACKgotLost.patch