Opensuse 13.2 kernel commandline ip=xxxx:xxxx:xxxx:xxxx not working


I am using the OpenSuse 13.1 for a custom project and need to set ip address from kernel commandline.

I can see the driver coming up but for some reason the kernel is not accepting the setting that i am setting via command line.

I have an nfsroot also set up and my command line looks like below, rw nfsrootdebug ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:::off::

anybody used kernel command-line? or it something else is blocking this?