[GitHub] cloudstack pull request: Fix unique mac address per rVPC router

[remibergsma]

Github user remibergsma commented on the pull request:

    https://github.com/apache/cloudstack/pull/1413#issuecomment-183729063
  
    LGTM
    
    Master router:
    
![pr1413_router1](https://cloud.githubusercontent.com/assets/1630096/13029502/bb27f23c-d28e-11e5-9060-ebce22b3f9e7.png)
    
    Backup router before master destroy:
    
![pr1413_router2_before](https://cloud.githubusercontent.com/assets/1630096/13029504/c6da2776-d28e-11e5-8cee-d5e1fc24e81f.png)
    
    Backup now master:
    
![pr1413_router2_after](https://cloud.githubusercontent.com/assets/1630096/13029507/cfb1ba62-d28e-11e5-8dd4-f60cb38ad62d.png)
    
    What works fine now (and was broken before):
    - eth2 (private gw) is only UP on master (used to be both UP on 
master/backup)
    - eth2 has unique mac addresses on each router (used to be the same)
    - a crash of router brings up private gw on new master
    
    Integration tests are running as we spreak.


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