Usage: nl-class-list [OPTION]...

OPTIONS
     --details         Show details
     --stats           Show statistics
 -h, --help            Show this help
 -v, --version         Show versioning information

 -d, --dev=DEV         Device the class is attached to. (default: all)
 -p, --parent=ID       Identifier of parent class.
 -i, --id=ID           Identifier.
 -k, --kind=NAME       Kind of class (e.g. pfifo_fast)

EXAMPLE
    # Display statistics of all classes on eth0
    $ nl-class-list --stats --dev=eth0