Include examples how to set MTU on dracut.cmdline

Hello, could we please have examples in the documentation, how to set MTU for interfaces on a dracut kernel line, as described in the Dracut man pages:

       bond=<bondname>[:<bondslaves>:[:<options>[:<mtu>]]]
           Setup bonding device <bondname> on top of <bondslaves>.
           <bondslaves> is a comma-separated list of physical (ethernet)
           interfaces. <options> is a comma-separated list on bonding
           options (modinfo bonding for details) in format compatible
           with initscripts. If <options> includes multi-valued
           arp_ip_target option, then its values should be separated by
           semicolon. if the mtu is specified, it will be set on the
           bond master. Bond without parameters assumes
           bond=bond0:eth0,eth1:mode=balance-rr