Is there any chance for mikrotik to make trafr binary for freebsd?, i really need it for my snort 
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wish add libnetfilter_queue feature.
libnetfilter_queue is a userspace library providing an API to packets that have been queued by the kernel packet filter. It is is part of a system that deprecates the old ip_queue / libipq mechanism.
libnetfilter_queue has been previously known as libnfnetlink_queue.
so libnetfilter_queue will work for snort?
Hmm i don’t quite sure about advanced stuff on freebsd cause i am new myself, so i don’t understand about your mentioned userspace library .