ARUBACLOUD :
[root@nethserver network-scripts]# ip ro
86.105.52.0/24 dev eth0 proto kernel scope link src 86.105.52.137
169.254.0.0/16 dev eth0 scope link metric 1002
default via 86.105.52.1 dev eth0
So after installation on clean CentOS, server is not reachable.