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ubuntu - LXC networking with public IP

I have installed LXC in ubuntu server 12.04 using this link. It was installed successfully and i am able login using ubutu/ubuntu as username and password. Then I tried to setup network for LXC container.



I changed in /etc/network/interface as




auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
        address 125.67.43.100
        netmask 255.255.255.0
        broadcast 178.33.40.255
        gateway 125.67.43.1



Content of /var/lib/lxc/mycontainer/config is:



lxc.utsname = mycontainer
lxc.mount = /var/lib/lxc/test/fstab
lxc.rootfs = /var/lib/lxc/test/rootfs


lxc.network.type = veth

lxc.network.flags = up
lxc.network.link = br0
lxc.network.name = eth0
lxc.network.veth.pair = vethmycontainer
lxc.network.ipv4 = 125.67.43.102
lxc.network.hwaddr= 02:00:00:86:5b:11

lxc.devttydir = lxc
lxc.tty = 4
lxc.pts = 1024

lxc.arch = amd64
lxc.cap.drop = sys_module mac_admin mac_override
lxc.pivotdir = lxc_putold


Containers etc/network/interface



auto lo
iface lo inet loopback


auto eth0
iface eth0 inet static
        address 125.67.43.102
        netmask 255.255.255.0
        broadcast 178.33.40.255
        gateway 125.67.43.1


This is how my configuration is 




-------------        -----------         -----------   
| LXC       | -----> | Host OS | ------> | Gateway |
| Container |        | Ubuntu  |         |         | 
-------------        -----------         ----------- 
eth0 125.67.43.102   br0 <-> eth0        NAT GW:        
gw 125.67.43.1       br0 125.67.43.100   125.67.43.1    
                     gw 125.67.43.1

Ping 125.67.43.100   ping 125.67.43.1
ok                   OK

Ping 125.67.43.1     ping 125.67.43.102
FAIL                 OK


LXC container is not know outside host, any idea what i made wrong here?



Additional info




user@host$cat /proc/sys/net/ipv4/ip_forward is 1





I have added Nat rule




ip_tables -t nat -A POSTROUTING -s 125.67.43.102 -o eth0 -j MASQUERADE




Note: IPs I have used above is not original

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