Re: [Xen-devel] troubles using network boot with HVM guest

[Guillaume Rousse <Guillaume.Rousse@xxxxxxxx>]

Tim Deegan a écrit :
> Hi, 
> 
> At 14:27 +0200 on 04 Jun (1180967227), Guillaume Rousse wrote:
>> I tried to boot from network with HVM guest, using guest='n'
>> configuration value. The DHCP query is correctly send to the server, and
>> the answer is propagated to the virtual domain interface, as
>> demonstrated by tcpdump capture (included). However, it seems the
>> etherboot image included in xen isn't able to process it correctly, all
>> I have is 'no ip address' error message.
> 
> :( Works fine for me.  What DHCP server are you using?  Do you have any
> firewall/packet-filter/selinux/etc config in your dom0 that might be
> supressing the response?
dhcp-server 3.0.4. And DHCP works fine from an installed guest domain.

And as stated in my initial message, I see response packet arriving on
the bridged interface (xenbr0), as well as on the guest domain virtual
interface (vif13.0 in the given capture file). Hence my assumption than
network setup and server is OK, and problem comes from emulated network
card.

As a potential issue, dhcp reply comes from another network, through a
proxy. I once had troubles with windows client ignoring those answers if
their origin was not strictly set to the local network broadcast adress.
-- 
Guillaume Rousse
Moyens Informatiques - INRIA Futurs
Tel: 01 69 35 69 62

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