Public static IP only for a Vagrantfile

I modified the Vagrantfile for taiga-vagrant based on VAGRANT DOCS/Public Networks as follows: # -*- mode: ruby -*- # vi: set ft=ruby : require "./source.rb" ROOT_PATH = File.dirname(__FILE__) VAGRANTFILE_API_VERSION = "2" def configure_extra(config) end def configure(config) config.vm.box = "trusty64" config.vm.box_url = "https://cloud-images.ubuntu.com/vagrant/trusty/current/trusty-server-cloudimg-amd64-vagrant-disk1.box " # Disable automatic box update checking. If you disable this, then # boxes will only be checked for updates when the user runs # vagrant box outdated. This is not recommended. # config.vm.box_check_update = false # Host name config.vm.hostname = "taiga" # Create a forwarded port mapping which allows access to a specific port # within the machine from a port on the host machine. config.vm.network :forwarded_port, host: 8000, guest: 8000 config.vm.network :forwarded_port, host: 9001, guest: 9001 # Create a public network, which generally matched to bridged network. # Bridged networks make the machine appear as another physical device on # your network. config.vm.network "public_network", autoconfig: false config.vm.provision "fix-no-tty", type: "shell" do |s| s.privileged = false s.inline = "sudo sed -i '/tty/!s/mesg n/tty -s \\&\\& mesg n/' /root/.profile" end # manual ip config.vm.provision "shell", run: "always", inline: "ifconfig eth1 xxx.yyy.zzz.153 netmask 255.255.255.0 up" # manual ipv6 config.vm.provision "shell", run: "always", inline: "ifconfig eth1 inet6 add fc00::17/7" # default router config.vm.provision "shell", run: "always", inline: "route add default gw xxx.yyy.zzz.132" # default router ipv6 config.vm.provision "shell", run: "always", inline: "route -A inet6 add default gw fc00::1 eth1" # delete default gw on eth0 config.vm.provision "shell", run: "always", inline: "eval route -n | awk '{ if ($8 ==\"eth0\" && $2 != \"0.0.0.0\") print \"route del default gw \" $2; }'" # If true, then any SSH connections made will enable agent forwarding. # Default value: false config.ssh.forward_agent = true # Share an additional folder to the guest VM. The first argument is # the path on the host to the actual folder. The second argument is # the path on the guest to mount the folder. And the optional third # argument is a set of non-required options. config.vm.synced_folder "./data", "/home/vagrant/data" # Provider-specific configuration so you can fine-tune various # backing providers for Vagrant. These expose provider-specific options. config.vm.provider "virtualbox" do |vb| # Boot with headless mode vb.gui = false host = RbConfig::CONFIG['host_os'] # Giving a quarter of system memory to VM and access to all available cpu cores if host =~ /darwin/ cpus = sysctl -n hw.ncpu.to_i # sysctl returns Bytes, converting to MB... mem = sysctl -n hw.memsize.to_i / 1024 / 1024 / 4 elsif host =~ /linux/ cpus = nproc.to_i # meminfo returns KB, converting to MB... mem = grep 'MemTotal' /proc/meminfo | sed -e 's/MemTotal://' -e 's/ kB//'.to_i / 1024 / 4 else # hardcoding values for windows... cpus = 2 mem = 2048 end vb.customize ["modifyvm", :id, "--memory", mem] vb.customize ["modifyvm", :id, "--cpus", cpus] end # Provisioning config.vm.provision "shell" do |shell| vagrant_shell_scripts_configure( shell, File.join(ROOT_PATH, "scripts"), "provision.sh", {} ) end end # Look for a Vagrantfile.local to load local_vagrantfile = "#{__FILE__}.local" if File.exists?(local_vagrantfile) eval File.read(local_vagrantfile) end Vagrant.configure(VAGRANTFILE_API_VERSION) do |config| configure config configure_extra config end After vagrant up, I am asked for *"Which interface should the network bridge to?"*. After selecting *1 (for eth0)*, the VirtualBox virtual machine launches just fine and I can connect via ssh. The networking interface(s) settings of this VM are: eth0 Link encap:Ethernet HWaddr 08:00:27:70:2a:9d inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fe70:2a9d/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1462 errors:0 dropped:0 overruns:0 frame:0 TX packets:968 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:151879 (151.8 KB) TX bytes:122611 (122.6 KB) eth1 Link encap:Ethernet HWaddr 08:00:27:2e:e8:7f inet addr:xxx.yyy.zzz.153 Bcast:xxx.yyy.zzz.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fe2e:e87f/64 Scope:Link inet6 addr: fc00::17/7 Scope:Global UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1335 errors:0 dropped:0 overruns:0 frame:0 TX packets:683 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1078620 (1.0 MB) TX bytes:85690 (85.6 KB) *Small Update* While launching, there are several messages of default: Warning: Connection timeout. Retrying... default: Warning: Remote connection disconnect. Retrying... default: Warning: Remote connection disconnect. Retrying... default: Warning: Remote connection disconnect. Retrying... ... Finally, though, the machine starts. I can access taiga just fine from the outer internet. But, **is it necessary to have both of these interfaces?** **Can I not have the static public IP for eth0 only?**