Solution 1
The IP address assigned to the container might be already in use in your network. Make sure it is not. The problem container address can be checked by issuing the following command:
# grep IP_ADDRESS /etc/vz/conf/<UUID>.conf
IP_ADDRESS="10.0.186.101"
The IP addresses of other containers, which are running, can be checked by running
# cat /proc/vz/veinfo
Solution 2
Make sure the routing to the container is properly configured. Containers can use the default router for your network, or you may configure the hardware node as router for its containers.
