bpf filter file size limitation

[Daniel Rieille via Snort-users <snort-users () lists snort org>]

Hi guys,

I just wanted to know what is the size limit of a bpf filter file.

Currently, I'm using one with about 125 lines (meaning 125 simple
expressions like !(src host xxx && dst host yyyy)) and addind one more line
(expression) makes snort fail although the rules are ok:

pfring DAQ configured to passive.
Acquiring network traffic from "eth2".
ERROR: Can't set DAQ BPF filter to '

I didnt find any clear information about what could impact bpf file size.
Some buffer allocation ?

Any help would be greatly appreciated.

Thanks

Dan

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