I have dedicated server from OVH with additional ipv4, I have added the IP to the system interface configuration (debian), I can access the machine from both IPs now, but for some reason the first response I receive from the additional ip set as eth0:0 is way slower then from the first original ip set as eth0.
Could this be caused by wrong configuration in the system or it is problem caused on OVH side ?
eth0:0doesn't add additional interfaces or anything. It really shouldn't make any difference. One other thing you might check is the traceroute for the two IPs. Do they follow different network paths or something? – Zoredache Jun 22 '16 at 20:45