Errors initializing Snort with netmap support

[C. L. Martinez]

Hi all,

 Starting Snort with netmap support in DAQ, returns me the following error:

FATAL ERROR: Can't start DAQ (-1) - start_instance: Netmap
registration for em0 failed: Invalid argument (22)!

DAQ conf:

config daq: netmap
config daq_dir: /opt/daq/lib/daq
config daq_mode: passive
#config daq_var:

Do I need to setup something else?? Snort is 2.9.7.0