You have cracked the hidden egg - congratulations!

Get your Failover IPv4 address with 36 % discount and an additional 75% discount on the set-up fee. But be aware: This offer ist only valid for a short time.
If one of your root servers/vServers/storages is unavailable, e.g. because you need to update the software on it, another root server/vServer/storage can take over the failover IPv4 address in order to continue offering the services behind the IP address.