5.4.

multipaths {
       multipath {
              wwid                  3600508b4000156d70001200000b0000
              alias                 yellow
              path_grouping_policy  multibus
              path_selector         "round-robin 0"
              failback              manual
              no_path_retry         5
       }
       multipath {
              wwid                  1DEC_321816758474
              alias                 red
        }
}