After a ddos attack i changed my server to a better one and I phurcased also an IP Failover for the first time. So, in ovh manager everything is right but Im using virtualmin and I have never did this job before.
In Webmin > Networking > Network Intefaces
I have eth0 with the actual server IP which is shared on two nameservers ns1.mydomain.com and ns2.mydomain.com
I have also eth1 which one is not editable or clickable with an information which tells in red color "down"
Im using centos 7 and the server currently is active with 5 sites.
How can I activate on webmin the sedond IP failover?