Description of problem:
Beaker automatically adds certain kernel command line options like ksdevice=bootif during kickstart. Occasionally I need to remove one of those options for testing, and I thought the only way was to set up my own PXE server. I learned today there is a hidden (or not well documented) feature of adding the option with a ! prefix to disable it. For example, this will remove the option:
<recipe ... kernel_options="!ksdevice=bootif" ...>
Please update the documentation to show this method.
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