[Snort-users] ERROR: Can't set DAQ BPF filter to 'dna0:dna1' (pfring_daq_set_filter: BPF state machine compilation failed!)!

Avery Rozar

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Aug 13, 2013, 3:53:59 PM8/13/13

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Trying to run my new box with a silicom card with DNA license. When I try to start snort, I get the following error. Though, I don't even have BPF set, its #ed out.

ERROR: Can't set DAQ BPF filter to 'dna0:dna1' (pfring_daq_set_filter: BPF state machine compilation failed!)!

Is this a snort, or DNA config issue?

Thanks in advance!

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Russ Combs

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Aug 13, 2013, 5:35:18 PM8/13/13

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On Tue, Aug 13, 2013 at 3:53 PM, Avery Rozar <Avery...@i-techsupport.com> wrote:

Trying to run my new box with a silicom card with DNA license. When I try to start snort, I get the following error. Though, I don't even have BPF set, its #ed out.

ERROR: Can't set DAQ BPF filter to 'dna0:dna1' (pfring_daq_set_filter: BPF state machine compilation failed!)!

Is this a snort, or DNA config issue?

Most likely the issue is that -i is missing from the command line. Snort permutes the args and anything unrecognized is passed to the DAQ to be used as a BPF.

waldo kitty

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Aug 13, 2013, 7:05:41 PM8/13/13

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On 8/13/2013 15:53, Avery Rozar wrote:
> Trying to run my new box with a silicom card with DNA license. When I try to start snort, I get the following error. Though, I don't even have BPF set, its #ed out.
>
> ERROR: Can't set DAQ BPF filter to 'dna0:dna1' (pfring_daq_set_filter: BPF state machine compilation failed!)!
>
> Is this a snort, or DNA config issue?

what is your exact command line to start snort... if you use a script, what does
that script generate for the actual command line to start snort?

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Avery Rozar

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Aug 14, 2013, 8:35:59 AM8/14/13

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I was missing the -I, thanks Russ.

snort -c /etc/snort/snort.conf -A console -i dna0:dna1 --daq-dir
/usr/local/lib/daq --daq pfring --daq-var clusterid=10 --daq-mode inline -Q

Now I'm getting a clusterid error.

pfring DAQ configured to inline.
dna0 <-> dna1
ERROR: Can't initialize DAQ pfring (-1) - pfring_daq_initialize: not
enough cluster ids (1)

Looking threw the users guide right now.

Y M

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Aug 14, 2013, 10:16:28 AM8/14/13

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How many snort processes are you running?

Avery Rozar

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Aug 14, 2013, 11:05:57 AM8/14/13

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This is just my first one.