GabrielBrascher commented on issue #3488: cloud0 subnet should not be hardcoded 
to 169.254.0.1/16
URL: https://github.com/apache/cloudstack/issues/3488#issuecomment-510920849
 
 
   @rhtyd I am +1 on implementing a workaround. I will be happy to discuss and 
help designing other approaches, but I think that we should first invest some 
effort on the workaround, at least for now.
   
   We already have extended CloudStack KVM agent with a hotfix for a 4.12.0.0 
environment, implemented by @wido. It looks good on the KVM agent side. It was 
added a few parameters for the `agent.properties`. If they are not configured, 
ACS keep using de current default values.
   
   ```
   network.linklocal.cidr=169.254.0.0/16
   network.linklocal.address=169.254.0.1/16
   network.linklocal.gateway=169.254.0.1
   network.linklocal.netmask=255.255.0.0
   ```
   
   Unfortunatelly, we still need some work on the CloudStack management side, 
otherwise, it still managing system vms with the `169.254.0.0/16` hardcoded 
network.
   
   It is work mentioning that we configured the global settings 
`control.gateway` and `control.cidr` before configuring the new zone; however, 
the Control network kept with the "hardcoded" setup.

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