I have one dedicaced server with its own IP and another IP (failover) who refer to the first.

I will wish to change the gateway of a Proxmox virtual machine (openvz) who runs on this dedicaced server to go through the failover IP rather than the ip of host main server.

Once connected to a virtual machine, when I do a traceroute

VE# traceroute www.google.fr

traceroute to www.google.fr (209.85.229.104), 30 hops max, 60 byte packets
 1  MY_SERVER_NAME.ovh.net (xxx.xxx.xxx.xxx FIRST_IP_MAIN_SERVER)  0.021 ms  0.010 ms  0.009 ms

The first line tells me the ip of host main server. I would like that the traceroute display the second IP failover.

VE# route

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.0.2.1       *               255.255.255.255 UH    0      0        0 venet0
default         192.0.2.1       0.0.0.0         UG    0      0        0 venet0

With iptables

HOST# iptables -t nat -L

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination         
MASQUERADE  all  --  anywhere             anywhere            
MASQUERADE  all  --  anywhere             anywhere            
SNAT       tcp  --  anywhere             10.10.101.2         tcp dpt:www state NEW,RELATED,ESTABLISHED,UNTRACKED to:SECOND_IP_FAILOVER
SNAT       all  --  10.10.101.2          anywhere            to:SECOND_IP_FAILOVER

10.10.101.2 is the virtual machine IP (interface venet0)

Any ideas ?