In Drupal-lamp we usually have a private virtual machine when in development. Under this scenario you can only access the site from the host machine where you spun up. However, there are situations where you would want the vm to be available to other devices on your network. (e.g., testing a site on a mobile device).
Solution
In your Drupal-lamp directory there is a Vagrantfile. By default the Vagrantfile has a line which state:
server.vm.network :private_network, ip: '192.168.50.5'
Change this line to:
server.vm.network :public_network
Run vagrant up. Vagrant will present options for which network to bridge. Mine looks like:
[drupaldev] Available bridged network interfaces:
1) en0: Wi-Fi (AirPort)
2) en4: Thunderbolt 1
3) en5: Thunderbolt 2
4) bridge0
5) p2p0
Select the network device which has internet connection. In my situation it would be number 1. In order to keep from having this prompt you each and every vagrant up, you can change your server.vm.network statement to look something like this:
server.vm.network :public_network, :bridge => 'en0: Wi-Fi (AirPort)'
You need to change the bridge to be appropriate for your network interface. Under the scenario above DHCP will automatically assign you an ip. If you are using our Ubuntu 12.04 box that is default in Drupal-lamp you will need to ssh into the machine and run ifconfig to determine the ip.
➜ drupal-lamp git:(master) ✗ vagrant ssh
Welcome to Ubuntu 12.04.1 LTS (GNU/Linux 3.2.0-29-virtual x86_64)
* Documentation: https://help.ubuntu.com/
105 packages can be updated.
49 updates are security updates.
Last login: Thu Jan 31 13:48:53 2013
vagrant@drupal:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:0c:29:97:31:80
inet addr:192.168.163.166 Bcast:192.168.163.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe97:3180/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:253816 errors:0 dropped:0 overruns:0 frame:0
TX packets:79972 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:374526420 (374.5 MB) TX bytes:4668230 (4.6 MB)
eth1 Link encap:Ethernet HWaddr 00:0c:29:97:31:8a
inet addr:10.1.10.106 Bcast:10.1.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe97:318a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:21462 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2606402 (2.6 MB) TX bytes:1152 (1.1 KB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:51 errors:0 dropped:0 overruns:0 frame:0
TX packets:51 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3266 (3.2 KB) TX bytes:3266 (3.2 KB)
vagrant@drupal:~$
In my situation, 10.1.10.106 is the ip that you need to add to your /etc/hosts file on any device on your network in order to view your vm.
See the official Vagrant documentation for more information.