Re: [Xen-users] Bridged networking example

[Sven <svoop@xxxxxxxxxxx>]

Hi Alexandre

I couldn't continue debugging my network issue due to family reasons, but I'm
now back at it with news.

After some issues with the not yet stable Xen 4.2 package on Gentoo, I could
install it meanwhile. And on Xen 4.2 some of the issues are gone. I left all Xen
configs at their default and use the following guest definition now:

name = "dom1-tango"
uuid = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxx"
bootloader = "pygrub"
root = "/dev/xvda1 ro"
extra = "3"   # runlevel
memory = 5000
disk = [ 'phy:/dev/md1,xvda1,w' ]
vif = [ 'bridge=xenbr0' ]

After creating the domU, I have the following on dom0:

vif1.0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::fcff:ffff:feff:ffff  prefixlen 64  scopeid 0x20<link>
        ether fe:ff:ff:ff:ff:ff  txqueuelen 32  (Ethernet)
        RX packets 82  bytes 3756 (3.6 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 58  bytes 4314 (4.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
xenbr0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu 1500
        inet xx.xx.xx.72  netmask 255.255.255.224  broadcast xx.xx.xx.95
        inet6 xxxx::xxxx:xxxx:xxxx:ede1  prefixlen 64  scopeid 0x20<link>
        ether xx:xx:xx:xx:xx:e1  txqueuelen 0  (Ethernet)
        RX packets 11424  bytes 734781 (717.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 5683  bytes 899447 (878.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.xxxxxxxxxxe1       no              eth0
                                                        vif1.0

So far, so good. I have full network on dom0 and I can ping dom0 on domU as
well. However, I can't ping the gateway on domU.

Apparently, the problem is on dom0 since the traffic from domU gets to the
bridge - but not beyond.

Any ideas what I could try next?





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