[Xen-devel] Maybe a bug of xen

[geaaru <geaaru@xxxxxxxxx>]

Hi!
Maybe, I found a bug of xen.
My system:
- domain0 - gentoo - xen-devel-3.0, kernel 2.6.12.5-r1
- domain1 - debian - kernel 2.6.12.5-r1 (2 interface: vif1.1 = eth0
(0.0.0.0), vif1.2 = eth1 (10.0.1.1 + gw 10.0.1.2))
Bridge:
xen-br0 (config as 10.0.1.2) include (vif1.2, vif0.0)
xen-br1 (config as 0.0.0.0) include (vif1.1, peth0)

On server domain1 I use a pppoe server. 

If a send a pppoe request of connection it works, but I see with
ethereal that there is alwais a arp request like this:
Who has 0.0.0.0? Gratuitos ARP
For these reason I try to disable arp protocol with:
- <dom0> ifconfig eth0 0.0.0.0 -arp up;
- <dom0> ifconfig peth0 0.0.0.0 -arp up;
- <dom0> ip link set eth0 arp off
- <dom0> ebtables -A *(all routing/nat tables) -p arp -j DROP;
- set to 0 or 1 /proc/sys/net/ipv4/arp_*;
But there is always arp request.
If I execute mii-tool or ethtool I have this output:

testing_xen ~ # mii-tool 
SIOCGMIIPHY on 'eth0' failed: Operation not supported 
eth1: negotiated 100baseTx-FD flow-control, link ok 
testing_xen ~ # ethtool eth0 
Settings for eth0: 
No data available

With mii-tool I can't read eth0, while is unload module of eth0 and the
reload module e1000 there is a new interface eth2 that mii-tool see
correctly. While eth0 had always same error message. I don't know!
On another abnormal of this system is that if I see traffic with
ethereal from a client see arp request, while from ethereal on server I
can't see arp request!

I think that this is a problem of xen, but maybe is a problem with e1000
kernel module or other. I don't know
Thanks for your replies.

Geaaru


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