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Re: [Xen-users] cannot ping vms created on ubuntu oneiric (11.10) dom0+ natty vm



with dom0 network interface set to eth0, ifconfig is:

brctl show is:

bridge name     bridge id               STP enabled     interfaces
eth0            8000.001517803fc6       no              peth0
                                                                                
  vif1.0

(in unix shell peth0 and vif1.0 line up under interfaces)



But notice the ifconfig, which is as follows. ifconfig -a shows eth0, but not up




lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  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)

peth0     Link encap:Ethernet  HWaddr 00:15:17:80:3f:c6  
          inet6 addr: fe80::215:17ff:fe80:3fc6/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:627 errors:0 dropped:7 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:85555 (85.5 KB)  TX bytes:492 (492.0 B)
          Interrupt:16 Memory:fc3e0000-fc400000 

vif1.0    Link encap:Ethernet  HWaddr fe:ff:ff:ff:ff:ff  
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:32 
          RX bytes:0 (0.0 B)  TX bytes:468 (468.0 B)






________________________________________
From: Todd H. Foster [toddf@xxxxxxxxxxxxxxxxx]
Sent: 25 January 2012 18:25
To: Benjamin Weaver; xen-users@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-users] cannot ping vms created on ubuntu oneiric (11.10) 
dom0+ natty vm

On the dom0 do brctl show and past the results.

________________________________
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx on behalf of Benjamin Weaver
Sent: Wed 1/25/2012 10:22 AM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] cannot ping vms created on ubuntu oneiric (11.10) dom0+ 
natty vm


When I create a vm using a default dom0 network interface as eth0, I cannot  
ping the vm.

I notice that a virbr0 bridge is  created. I had never seen this virbr0 when 
running Debian dom0s. I removed virbr0 by erasing the nodes in the default.xml 
file specifying this bridge.

I still could not ping my vm.

Do I need explicitly to create a bridge called eth0? I never needed to to this 
when running dom0 on Debian.

In a proper setup, would I have a network interface called eth0, and a bridge 
called eth0, both expicitly defined in /etc/network/interfaces?

If so, do I give the bridge the same address information as the primary network 
device, eth0?

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