[poky] strangeness: udhcpc runs when 'ip=dhcp' is in kernel cmdline

[Tim Cussins]

Hi all,

i've built my own kernel and image for our development system, and i've 
been mounting the rootfs image over NFS.

the kernel successfully does dhcp before mounting the NFS share - then 
udhcpc kicks in because the busybox-udhcp script looks for 'ip=dhcp' in 
the kernel command line (/proc/cmdline), launching udhcpc if it's 
present. does this seem odd to anyone?

AFAIK ip=dhcp is only really used for NFS root mounts, and i guess i 
assumed that the kernel would also be responsible for maintaining the 
DHCP lease. I might be wrong there.

http://www.mjmwired.net/kernel/Documentation/filesystems/nfs/nfsroot.txt#81

If anyone can shed some light on this, that'd be cool.

Cheers,
Tim