With Endian 2.5.1 a problem occured when backing up the existing configuration and attempting to apply to a dormant replica server. What appeared to happen is when restored the network cards appeared to be added to the old ones, so instead of eth0,1 ,2 they were named eth 3, 4, 5. So subsequently the green ip could not be accessed and current config would not work.
I found a bug report with the following useful info (credit to author!)
on shell: cd /etc |