Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
genl -V (return code: 0)
genl utility, iproute2-ss151103
genl -h (return code: 255)
Usage: genl [ OPTIONS ] OBJECT | help }
where OBJECT := { ctrl etc }
OPTIONS := { -s[tatistics] | -d[etails] | -r[aw] }