>>Do you mean, for instance, a boot option that spawns a 'command line'
>>or visual configuration utility before autoconfiguration takes place?
>Well, something like this and also save to a file so that it gets preserved
>after reboots.

	Less fancy (easier) approach is to:
	- have special file (/etc/boot.default) to be read from /boot
	- /boot pass the content along to the kernel
	- the kernel modifies device configuration hint based on the content
	It works quite well, actually.  Interactive editing (like FreeBSD
	does) have problem keeping the changes across kernel rebuild.

itojun