PATCH: ifupdown.c, udhcpc, and standalone shell

[Giuseppe Ciotta]

Hi Eric,

> >What about adding a build option to decide what dhcp client to use and
> >the options/arguments needed to execute it?
> >
> That doesn't work for distros like LEAF and probably openwrt where 
> the user has the option to select which dhcp client to use by 
> installing a specific package.
> 
> Eric

Well.. they shouldn't :)

Just an idea: each dhcp client in those distros could ship a script to
translate from a generic dhcp client interface used by ifup, to its
own specific (which looks a bit overkill, but i'm definitely against
probing for programs in the filesystem..)

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