Xen users - Feb 2006 - FC4 with Xen-3.0? Can someone post a step-by-step?

I''m a Xen newb.  I admit it.

I''ve tried following various howtos, and yet they all seem to assume
various
steps are easy enough for someone who doesn''t fully comprehend the
eccentricities of Xen''s bridging arrangements and other murky things.

I tried the FC4 distribution''s Xen kernels (bad idea at this point).

I''ve read the Xen docs.  I''ve followed the FC/Xen quickstart (
http://www.fedoraproject.org/wiki/FedoraXenQuickstart).

I''ve figured out how to install FC4 on a DomU from a local FC mirror.

What I can not get working is even the simplest networking.  I haven''t
seen
any writeups that explicity cover Dom0 networking -- they all gloss right
over to DomU.

Have a heart.  If you''re out there with a working FC4/Xen3 Dom0 that
has a
static address, tell me how you pulled it off.

Thanks,
Lost


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Hi "Lost in Xen",
	
On Fri, 2006-02-17 at 21:10 -0500, Lost in Xen wrote:
>  [...]
> What I can not get working is even the simplest networking.  I
haven''t
> seen any writeups that explicity cover Dom0 networking -- they all
> gloss right over to DomU.
>  
> Have a heart.  If you''re out there with a working FC4/Xen3 Dom0
that
> has a static address, tell me how you pulled it off.
First, you are more likely to get help ans save people time if you use
an adequate subject. In that case it would be something like "dom0
networking on Fedora4"

Then,please tell, what is your exact problem? I guess you mean you have
trouble getting dom0 networking going.

This should "just work", there is nothing special to do to get it
going,
normally.
The reasons why it doesn''t do for you can be:
- problem with acpi stuff (I have several machines having trouble with
networking which goes awy with acpi=off)

- missing network card driver - if you have an exotic card, your driver
may not be inckuded. You have to folooe the manual and readme''s in the
source distribution of xen, and compile a kernel with the needed
modules.

But it is easier to help you if you tell something more about the
symptoms you are experiencing. What''s in the logfiles? Where does
something not behave as you expect?

Henning


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Hi Lost,

Sorry out of line email.  Had to join to reply.

 > What I can not get working is even the simplest networking.  I 
haven''t seen any writeups that explicity cover Dom0 networking -- they 
all gloss right over to DomU.

Yes, it does work out of the box with certain network cards and  by 
starting with eth0 down. 

 3C59X cards work fine as does the tg3 cards.  SK98Lin, NS83820 and SKGE 
(DL530G) cards do not.

Second, bring the box up with eth0 down and let xen bring it up.  If 
eth0 is up, then when the physical interface is moved and reassigned a 
new MAC, it somehow keeps its old IP.  In the network-bridge script, an 
arping uses the IP to see if someone owns it and the physical card 
responds.  This causes two ARPs to be broadcast for a given card and  
the message  "eth0: received packet with  own address  as source 
address" to appear in the dmesg and /var/log/messages.

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