after ip=autoconf WAS: Kernel (2.4.X series) not doing the initial boot.
tuf at mmania.com
Thu Oct 11 17:00:41 CEST 2001
On Wed, Oct 10, 2001 at 03:32:03PM +0200, Geert Stappers wrote:
> At 23:19 +0200 10/9/01, Stephane Enten wrote:
> >Regarding the tests-of-the-day, I found something I'd call a bug:
> >in my kernels (2.4.10 and 2.4.9), if you just put the nfsroot= kernel
> >parameter in your "append" LILO configuration, the kernel is *not*
> >doing the autoconfiguration part.
> >(While the doc states that omitting the ip= parameter is OK.)
> >You have to specify 'ip=autoconf' and then the kernel do his DHCP
> >or BOOTP or RARP request.
> >No I have to find why the hell he isn't happy with the DHCPOFFER
> >returned by the DHCP server, but that's a huge step passed :)
> Once I had an encounter with a 3C509 with IRQ on line 9.
> The module was inserted without any options, so it assumed IRQ10.
> According tcpdump it did transmit packets, but it didn't react
> on the answers-packets due the wrong interrupt line.
> I suggest you append an other parameter.
> Such as "ether=9,0,eth0" which means eth0 at IRQ 9 and autoprobe I/O-base.
> ( http://ldp.nllgg.nl/HOWTO/BootPrompt-HOWTO-11.html#ss11.1 )
I added that, I planed to add it anyway since our machines has 2 NICs and
since their IRQs are reversed they are reversed (ie. port 0 = eth1, port 1 =
eth0 ... annoying :) ).
However, the DHCP code still did not accept the DHCPOFFER.
I explored the net/ipv4/ipconfig.c again and found that there is some
code to check if ic_myaddr equals INADDR_NONE.
I found that my ic_myaddr was set at 18.104.22.168 at the DHCP request time,
don't know why.
So I added "ip=255.255.255.255:autoconf" in my kernel config, then the
ic_myaddr was at INADDR_NONE (255.255.255.255) and the kernel was happy,
did the NFS mount and now I can work on tweaking the installation part :)
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