[ISSUE] Network get down

I have a big problem ... i have 3 vps : 2 Centos + 1 Windows.

Wit my actual network interfaces configuration now :


auto lo
iface lo inet loopback


auto eth0
iface eth0 inet static
address 176.223.223.114
netmask 255.255.255.252
gateway 176.223.223.113
post-up echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp


auto vmbr0
iface vmbr0 inet static
address 176.223.224.88
netmask 255.255.255.248
bridge_ports none
bridge_stp off
bridge_fd 0




Only the first virtual machine wit ip 176.223.224.90 can be ping and to have internet...

The 176.223.224.91 Windows , and the 176.223.224.92 Centos machine will not ping ...





I did understand that i have to change the network interface to this :

auto lo
iface lo inet loopback


auto eth0
iface eth0 inet manual


auto vmbr0
iface vmbr0 inet static
address 176.223.223.114
netmask 255.255.255.252
gateway 176.223.223.113
bridge_ports eth0
bridge_stp off
bridge_fd 0




All work for about 3 - 4 hours and after that none of the virtual machines will not have internet . I do not understand why . First time it does ping and work and after 3 -4 hours nothing worked ...


Can someone tell me or help me somehow ... please . I need help please all who can help me .