Softflowd: Can I add a BPF filter somehow?

[RusFM]

Softflowd allows you to add a BPF filter at the end of the command line to filter what softflowd sends.

For example, I don't want to capture all the DNS connections as I monitor these elsewhere.

Is there are a way to add the "NOT PORT 53" onto the end of the command line that starts softflowd?

Thanks,
Rus