Xen users - Jul 2005 - broadcast from domain-0 not reaching guest

Hello,

I got Xen working on my machine using the packages that come with
Fedora Core 4, but I got one problem:  broadcast packages sent from
Domain-0 will not reach the guest os.  The rest seems to work perfectly.

broadcast from guest reaches LAN.
broadcast from LAN(but not Domain-0) reaches guest.

Does anybody know how to get this working?


Thorsten.



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Hi,
On Thursday 14 July 2005 12:44, wolpers wrote:
> I got Xen working on my machine using the packages that come with
> Fedora Core 4, but I got one problem:  broadcast packages sent from
> Domain-0 will not reach the guest os.  The rest seems to work perfectly.
>
> broadcast from guest reaches LAN.
> broadcast from LAN(but not Domain-0) reaches guest.
>
> Does anybody know how to get this working?
Works here.

Can you check "ifconfig" if you have an IP Adress assigned to your eth
device?
the IP should be set only on the bridge and not on the eth0 device inside it, 
so the kernel has no way to choose the "wrong" interface to send out 
broadcasts.

/Ernst

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Am Donnerstag, den 14.07.2005, 12:50 +0200 schrieb Ernst
Bachmann:
> Hi,
> On Thursday 14 July 2005 12:44, wolpers wrote:
> 
> > I got Xen working on my machine using the packages that come with
> > Fedora Core 4, but I got one problem:  broadcast packages sent from
> > Domain-0 will not reach the guest os.  The rest seems to work
perfectly.
> >
> > broadcast from guest reaches LAN.
> > broadcast from LAN(but not Domain-0) reaches guest.
> >
> > Does anybody know how to get this working?
> 
> Works here.
> 
> Can you check "ifconfig" if you have an IP Adress assigned to
your eth device?
> the IP should be set only on the bridge and not on the eth0 device inside
it,
> so the kernel has no way to choose the "wrong" interface to send
out
> broadcasts.
> 
> /Ernst



Hi,
thx for your quick response.  Yes, after doing the ''xend
start'' ifconfig
shows that the eth0 and xen-br0 have the same inet address as well as
the same broadcast address.  the netmask is different (255.255.255.0 for
eth0 and 255.255.255.255 for xen-br0).

While trying to find out how to get rid of the address configuration for
eth0 I found out that a plain restart of eth0  (ifdown/ifup eth0) does
the trick for me.

This is quite confusing but I am able to repress that for a long
while ;) 


Thorsten.











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> http://lists.xensource.com/xen-users

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