OVH ustawienie failover IP w bridge network

W /etc/network/interfaces należy ustawić:

auto lo eth0
iface lo inet loopback
iface eth0 inet static
address IP_failover
netmask 255.255.255.255
broadcast  IP_failover 
post-up ip route add Gate_ip dev eth0
post-up ip route add default via  Gate_ip 
pre-down ip route del  Gate_ip  dev eth0
pre-down ip route del default via  Gate_ip 
source /etc/network/interfaces.d/*

Gate_ip można sprawdzić poleceniem: $ ip r