I'm having no problems doing something similar, but I'm using the
filtering option in flow-receive:

flow-receive -V5 -f filter_config_file -F 'filter_in_file' \
10.1.2.3/10.4.5.6/11111 | flow-send -x0 -V5 10.1.2.3/10.7.8.9/20999

The -x0 option was to work around a problem with flow-send not being able
to send fast enough, not a problem as you describe.  I assume you did try
it without -d 1 also.

Russell

>
> Hi,
>
> I'm running a chain of flow-tools to receive, filter and resend some v5
> flow packets; something like this:
>
> flow-receive -d 1 -V 5 0/0/9996 -z 0 | flow-filter -d 1 -P 179 |
> flow-send -d 1 -s 0/127.0.0.1/9998
>
> I'm experiencing a lot of buffering in the process and the flows get
> send all together more or less every two hours. Has anyone experienced
> the same problem? Is there a way to have flow-receive not buffer the
> flows it receives?
>
> Pablo
>
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