Syslinux - Sep 2003 - FWD: Network Boot IP Configuration Dilemma

If you want eth0 to be used and no dynamic IP
configuration request should not occur in the Linux
kernel, specify *both* APPEND and IPAPPEND options
like:

APPEND ip=:::::eth0:none
IPAPPEND 1

It's very tricky but it works, at least Linux 2.4.18
which I tested.  The IP-PNP routine in the kernel
doesn't modify values if the option values are not
explicitly specified.  IPAPPEND doesn't provide the
<device> option and <autoconf> option, so the values
for the options set by the previous APPEND will
survive.

K.Kumon
>Fred Feirtag wrote:
 > I never wanted to "always" do that.  My hack always does that,
but
 > my suggestion was maintain the "1" flag for the current
behavior,
 > but have any other string passed through as the device:
 > IPAPPEND 1
 > --same as now
 > IPAPPEND eth0
 > --passes ip=#:#:#:#::eth0:
 > IPAPPEND eth1
 > --passes ip=#:#:#:#::eth1:
 > IPAPPEND fd0
 > --passes ip=#:#:#:#::fd0:  for fddi devices or whatever.
 > Of course something like
 > IPDEVAPPEND eth0
 > would be good or even better.

kumon at flab.fujitsu.co.jp wrote:
> If you want eth0 to be used and no dynamic IP
> configuration request should not occur in the Linux
> kernel, specify *both* APPEND and IPAPPEND options
> like:
> 
> APPEND ip=:::::eth0:none
> IPAPPEND 1
> 
> It's very tricky but it works, at least Linux 2.4.18
> which I tested.  The IP-PNP routine in the kernel
> doesn't modify values if the option values are not
> explicitly specified.  IPAPPEND doesn't provide the
> <device> option and <autoconf> option, so the values
> for the options set by the previous APPEND will
> survive.
> 
Excellent...

	-hpa

Hey that's great!  It certainly does work, and
as long as each "ip=" on the cmdline repeatedly
sets up a call to ip_auto_config_setup (in ipconfig.c)
and user_dev_name is a static variable (initialized
only once by the compiler), it looks like it will
continue to work.  I can't believe I failed to try it
that way.  Thanks!!!

--Fred

kumon at flab.fujitsu.co.jp wrote:
>If you want eth0 to be used and no dynamic IP
>configuration request should not occur in the Linux
>kernel, specify *both* APPEND and IPAPPEND options
>like:
>
>APPEND ip=:::::eth0:none
>IPAPPEND 1
>
>  
>