After installing the Sniffer10G software, the instructions to configure Bro to use Myri-10G network adapters and the Sniffer10G Libpcap library are as follows.
With Bro 2.1 (and the upcoming 2.2 release) you will need to configure Bro with this option:
./configure --with-pcap=/opt/snf/
Then in your node.cfg file you should make any worker using the Sniffer10G drivers look similar to this:
[worker1] type=worker host=1.2.3.4 interface=eth0 lb_method=myricom lb_procs=10
The flow-based load balancing will be automatically enabled.