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Using the install hypervisor and tools option in YaST to install KVM and KVM
tools I select yes to have it install a bridge for me. The bridge is configured
at /etc/sysconfig/network/ifcfg-br0 but the BRIDGE_FORWARDDELAY is set to
'0.00' which is invalid. Setting it to '2.00' (in the range of 2-30 reported by
wicked as valid fixes this).

Reproducible: Always

Steps to Reproduce:
Install KVM and KVM tools using the YaST install hypervisors option and select
yes when it asks to install a bridge.
Actual Results:  
br0 is configured but not working resulting in broken networking on reboot.

Expected Results:  
Expect that br0 is up and performs DHCP properly on reboot and is useable by
libvirt.

I am not sure what a good default value is but setting the delay to 2.00 does
work for me locally. Also happy to attempt pushing the actual patch if I can be
pointed in the right place to edit things.