[libvirt] F12beta guest will not connect to LAN via bridge

Gerry Reno greno at verizon.net
Tue Nov 3 05:34:44 UTC 2009


Setup:
HOST: F11 x86_64
GUEST: F12beta x86_64

I have a number of guests setup on this host and all connect without a 
problem with the 'br0' bridge on the host.  I created a new guest and 
loaded F12beta on it.  I defined it to also use 'br0' networking but 
this guest cannot ping anything on the LAN.  All the other guests have 
no problems communicating to addresses on the LAN. 

Details:

### on HOST:
# brctl showmacs br0
port no mac addr                is local?       ageing timer
  1     00:0b:82:11:bc:cb       no                15.88
  3     00:0c:01:30:50:00       no                16.37
  2     00:0c:01:40:50:00       no                 2.51
  1     00:0c:29:e3:bc:ee       no                 0.49
  1     00:18:f8:48:27:15       no                 2.51
  1     00:18:f8:9b:ba:b4       no               116.39
  1     00:18:f8:9b:ba:b5       no                20.60
  1     00:1a:4d:5e:f6:36       no               156.43
  1     00:24:1d:19:05:cf       yes                0.00
  3     06:1d:1d:7a:31:9b       yes                0.00
  2     06:ba:11:dd:7b:08       yes                0.00
  1     54:52:00:24:5e:cf       no                28.93

# EXISTING GUEST: network interface in xml file:
    <interface type='bridge'>
      <mac address='00:0c:01:30:50:00'/>
      <source bridge='br0'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
    </interface>

# NEW GUEST: network interface in xml file:
    <interface type='bridge'>
      <mac address='00:0c:01:40:50:00'/>
      <source bridge='br0'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
    </interface>

### on EXISTING GUEST:
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
HWADDR=00:0c:01:30:50:00
IPADDR=192.168.1.200
NETMASK=255.255.255.0
NETWORK=192.168.1.0

### on NEW GUEST:
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
HWADDR=00:0c:01:40:50:00
IPADDR=192.168.1.210
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
NETWORK=192.168.1.0
TYPE=Ethernet
IPV6INIT=no
USERCTL=no

### on EXISTING GUEST:
# ping 192.168.1.1
succeeds

### on NEW GUEST:
# ping 192.168.1.1
fails with Destination Host Unreachable


Is there something else I need to configure in F12beta to get this working?

-Gerry




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