[BusyBox] ifup, ifdown applets

[Steven Scholz]

I wrote:

> > Ive started to rewritting ifupdown, its going to take a while though, it
> > was probably a mistake to commit the current ifupdown.
> No! Definitly not!
> 
> This way we could express some wishes! :o)
> 
> So first: Do you think it's nessesary to use a pid file? I don't like that since
> I am using JFFS2 as root fs and don't want too much writing happen...
> And if the system crashes there are still old, invalid pid files around...
> 
> Second: Maybe we should at least use defines for hardcoded stuff. I am thinking
> of the udhcp script file. And of course it should be the same in the udhcp
> source and in the ifupdown source...
> 
> Third: What about using a default if DHCP fails? I want to use udhcpc with
> option "-q, --quit Quit after obtaining lease" only on boot. So when there's no
> network connection while booting the interface doesn't get configured at all...

How about incorporating "ipcalc" as well!?

Steven