/usr/bin/ibacm: unrecognized option '--help'
usage: /usr/bin/ibacm
[-D] - run as a daemon (default)
[-P] - run as a standard process
[-A addr_file] - address configuration file
(default /etc/rdma/ibacm_addr.cfg)
[-O option_file] - option configuration file
(default /etc/rdma/ibacm_opts.cfg)