Polling for possible reasons why the 'filter name' does not work

[DbdM Tbt <spin.x2k () gmail com>]

Good day to all,

I have been trying to figure out a behavior for a while now where the
'filter name' (third parameter of proto_register_protocol() function) does
not filter the captured messages.
For a brief background, I am studying/using an existing openflow dissector:
https://github.com/CPqD/ofdissector

I have scanned the README.developer and from looking at the ofdissector
code, everything seems to be in order.

At first I thought that the 'filter name' should be the same as the first
'prefix' of the display filters registered in hf_register_info
declarations. Meaning if the display filters are like 'abc.yyy.xxx', the
filter name should be 'abc'.
But I think this does not necessarily need to be the case as I tried
changing the prefixes in another of my dissectors and the filter name seems
to work fine.

Does anyone have any possible leads/reasons/hypothesis as to where should I
be looking to fix this?

Thank you in advance.

Best regards,
David

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