[lxc-users] How to increase IP range for containers.

[Abhijit Taware]

I am using lxc to create around 1000 containers.
I could get IP allocated to first 254 containers and not after that.
I changed IP mask of 'lxcbr0' and made appropriate changes in
/etc/default/lxc-net

USE_LXC_BRIDGE="true"
LXC_BRIDGE="lxcbr0"
LXC_ADDR="10.0.3.1"
LXC_NETMASK="255.255.0.0"
LXC_NETWORK="10.0.3.0/16"
LXC_DHCP_RANGE="10.0.3.2,10.0.255.254"
LXC_DHCP_MAX="65000"



Now I am not able to ping outside world from inside container, which was
possible with "255.255.255.0" netmask.
Can somebody help me with this.
Note : I can get all my containers the IP address with new netmask.
Here is my 'route -n ' o/p on host.

root at avatar:~# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
0.0.0.0         192.168.100.1   0.0.0.0         UG    0      0        0 eth0
10.0.0.0        0.0.0.0         255.255.0.0     U     0      0        0
lxcbr0
192.168.100.0   0.0.0.0         255.255.255.0   U     1      0        0 eth0
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0
virbr0


The o/p inside container is -

root at avatar:~# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
0.0.0.0         192.168.100.1   0.0.0.0         UG    0      0        0 eth0
10.0.0.0        0.0.0.0         255.255.0.0     U     0      0        0
lxcbr0
192.168.100.0   0.0.0.0         255.255.255.0   U     1      0        0 eth0
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0
virbr0



Regards,
Abhijit.
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