Syslinux - May 2005 - Need IP for NFS-Server

Hi,



I need to know the IP address of the DHCP/NFS server while in an initrd.
PXELINUX does not seem to supply any networking info to the kernel (which 
would be passed into the environment of the init process).
How could I achieve this?
(BTW, is there a DHCPD option to specify an NFS server IP, which is different 
from the DHCP server?)


Jan Engelhardt
--

Jan Engelhardt wrote:
> Hi,
> 
> I need to know the IP address of the DHCP/NFS server while in an initrd.
> PXELINUX does not seem to supply any networking info to the kernel (which 
> would be passed into the environment of the init process).
> How could I achieve this?
See the "ipappend" option, although you probably would be better off 
simply re-execute the DHCP query.

	-hpa

Hi,

"H. Peter Anvin" <hpa at zytor.com> schrieb am 23.05.05
14:15:14:
> Jan Engelhardt wrote:
> >>See the "ipappend" option, although you probably would be
better off simply
> >>re-execute the DHCP query.
> > 
> > Hm, that won't work, because it passes an option the kernel slurps
in for
> > itself (i.e. is not passed to the init process). Using ip=dhcp does
not do it
> > either, since the network module is not compiled in. So I guess I need
the
> > dhclient in initrd.
> 
> /proc/cmdline is your friend.
exactly. Give additional parameters in the pxelinux config file, parse this in
the initrd.
You can define anything you like as a kernel parameter - if the kernel
doesn't know
about it it just ignores its contents.

Regards,

Josef
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