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xen-devel
Re: [Xen-devel] Dom1 always does DHCP requests and vmid increasing
I have resolved my problem or at least treated the symptom.
The xenU kernel has
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
set in the default kernel configuration. I didn't do extensive tests, but it
would seem that with CONFIG_IP_PNP_DHCP=y the kernel will do DHCP requests if
an IP address is not supplied on the commandline irrespective other settings
it passed. Disabling this and rebuilding the kernel stops the behavour that
I was seeing. This allows the Linux DHCP client to do its thing which is
what I was after. I have a DHCP server setup with all the network settings,
DDNS, etc and the kernel DNS client doesn't pick everything up properly.
Thanks for the help
Mike
On Wed, 28 Jul 2004 08:00, Ian Pratt wrote:
> > > There's nothing in your config file below to cause the kernel to
> > > do a DHCP. Are you sure that your rc scripts aren't doing it?
> >
> > THe DHCP request that I am seeing requests ip adddress 1.2.3.4. The only
> > place that I can find that address mentioned is in the domain
> > configuration, so I don't believe that it is the rc scripts, but I will
> > have another look later in the day. Syslog entries also indicate that it
> > is a kernel DHCP request as opposed to a dhcpcd request.
>
> I might expect to see an ARP request for 1.2.3.4, but not a DHCP
> request. The 1.2.3.4 is just there to workaround a linux 2.6 bug,
> so could be removed altogether if you're booting 2.4.
>
> Can you post the first few packets of output from:
> tcpdump -i vifX.Y -s 2048 -vvxe
>
> Ian
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