Re: [Xen-devel] Xen 3.0 Xend loses network - eth0 -> veth0?

[Jurgen Stroo <blurg@xxxxxxxxxxxxxxx>]

No one on this?


Although very unlikely, it seems Jurgen Stroo stated on Jun 5 that :

> Hi list.
>
> I started with Xen yesterday, but I am facing a bit of a problem.
> My system had always configure eth0 with 10.0.0.4/8
>
> I am using Xen unstable source (on Debian sid)
>
> Now I installed Xen, rebooted the machine, and first the usual network is
> coming up and then the xend will be started.
>
> I'll end up with this, but I am wondering if this should be the way of
> things to be configured:
>
> megalosaurus:~# ifconfig -a
> eth0      Link encap:Ethernet  HWaddr 00:40:63:D7:A3:82
>           inet addr:10.0.0.4  Bcast:10.255.255.255  Mask:255.0.0.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:807379 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:680984 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:174 txqueuelen:1000
>           RX bytes:800654135 (763.5 MiB)  TX bytes:52893851 (50.4 MiB)
>           Interrupt:11 Base address:0xec00
>
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:19 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:19 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:2004 (1.9 KiB)  TX bytes:2004 (1.9 KiB)
>
> tap0      Link encap:Ethernet  HWaddr EE:F6:D7:D8:F4:F8
>           inet addr:10.0.0.150  Bcast:10.255.255.255  Mask:255.0.0.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:21 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:500
>           RX bytes:0 (0.0 b)  TX bytes:882 (882.0 b)
>
> veth0     Link encap:Ethernet  HWaddr 00:40:63:D7:A3:82
>           inet addr:10.0.0.4  Bcast:10.255.255.255  Mask:255.0.0.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:120 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 b)  TX bytes:32280 (31.5 KiB)
>
> vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
>           BROADCAST MULTICAST  MTU:1500  Metric:1
>           RX packets:120 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:32280 (31.5 KiB)  TX bytes:0 (0.0 b)
>
> xen-br0   Link encap:Ethernet  HWaddr 00:00:00:00:00:00
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>
> After the system boots and the network and xend is started, nothing works,
> with this configuration.
>
> Actually, it works now after restarting the network
> (/etc/init.d/networking) and after restarting xend (sometimes a couple of
> times though)
>
> I can't find anywhere in the docs if eth0 should be configured like this.
> Sometimes I am experiencing lots of lag, as if these IP's are conflicting with
> each other.
>
> The whole networking thing seems not to be configured right.
>
> for completeness:
>
> megalosaurus:~# netstat -rn
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  irtt
> Iface
> 10.0.0.202      10.0.0.150      255.255.255.255 UGH       0 0          0
> tap0
> 10.0.0.201      10.0.0.150      255.255.255.255 UGH       0 0          0
> tap0
> 10.0.0.0        0.0.0.0         255.0.0.0       U         0 0          0
> eth0
> 10.0.0.0        0.0.0.0         255.0.0.0       U         0 0          0
> tap0
> 0.0.0.0         10.0.0.254      0.0.0.0         UG        0 0          0
> eth0
>
>
> ---------------------------------------------------------------------------
> "When a man sits with a pretty girl for an hour, it seems like a minute.
> But let him sit on a hot stove for a minute and it's longer than any hour.
> That's relativity." [A. Einstein, 1938]
>
>
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>

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