vagrant up command giving error and eth1 not showing a resolvable ip address

Question

I am new to VMs, but have been using vagrant to run a Centos VM on Ubuntu 14.04. All of a sudden vagrant up command is giving this error:

root@         


        

Answer 1

This seems to be happen with bootup network configurations.

Although it failed to bring-up the network interface, you should be able to ssh into the box. To remove persistent network interfaces execute following commands in vagrant box folder.

vagrant ssh
sudo rm /etc/udev/rules.d/70-persistent-net.rules
exit
vagrant reload

source: https://github.com/mitchellh/vagrant/issues/921#issuecomment-15789964

Answer 2

It turns out that eth2 is the adapter to connect the Virtual-box directly to the outside Internet, so commenting out

config.vm.network :public_network

from the VagrantFile stopped the public network interfaces being loaded and so solved the issue.