Installation guide

This message appears:
Could not add rule to fixup DHCP response checksums on network
'default'
In vest ig at io n
Although this message appears to be evidence of an error, it is almost always harmless.
So lu t io n
Unless the problem you are experiencing is that the guest virtual machines are unable to
acquire IP addresses through DHCP, this message can be ignored.
If this is the case, refer to Section B.8, “ PXE boot (or D HCP) on guest failed” for further
details on this situation.
B.11. Unable t o add bridge br0 port vnet 0: No such device
Symp t o m
The following error message appears:
Unable to add bridge name_of_bridge port vnet0: No such device
For example, if the bridge name is br0, the error message will appear as:
Unable to add bridge br0 port vnet0: No such device
In lib virt versions 0.9.6 and earlier, the same error appears as:
Failed to add tap interface to bridge name_of_bridge: No such
device
Or for example, if the bridge is named br0:
Failed to add tap interface to bridge 'br0': No such device
In vest ig at io n
Both error messages reveal that the bridge device specified in the guest's (or domain's)
<i nterface> definition does not exist.
To verify the bridge device listed in the error message does not exist, use the shell
command i fco nfi g br0.
A message similar to this confirms the host has no bridge by that name:
br0: error fetching interface information: Device not found
If this is the case, continue to the solution.
However, if the resulting message is similar to the following, the issue exists elsewhere:
Red Hat Ent erp rise Linux 6 Virt ualiz at ion Host Configurat ion and G uest Inst allat ion G uide
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