[Discuss] [RESOLVED] VirtualBox and Vagrant: DNS won't work on guest

[Greg Rundlett (freephile)]

Thanks Dave Weingart!!

On Fri, Dec 19, 2014 at 2:12 PM, Greg Rundlett (freephile) <
greg at freephile.com> wrote:

> I am working on a MediaWiki project.  I use Mediawiki-Vagrant to setup a
> development environment.
>
[snip]

>
> I've got the latest versions of Virtual Box (4.3.20 r96996), and vagrant
> (1.7.1) running on Ubuntu Linux 14.04
>
[snip]

>
> It seemed that DNS was either not fast enough, or not reliable enough.
>
[snip]

> I've looked at the puppet configs, and the supposed "fixes" for networking
> are directly in the Vagrantfile
>
>     config.vm.provider :virtualbox do |vb|
>         # See http://www.virtualbox.org/manual/ch08.html for additional
> options.
>         vb.customize ['modifyvm', :id, '--memory', settings[:vagrant_ram]]
>         vb.customize ['modifyvm', :id, '--cpus', settings[:vagrant_cores]]
>         vb.customize ['modifyvm', :id, '--ostype', 'Ubuntu_64']
>         vb.customize ['modifyvm', :id, '--ioapic', 'on']  # Bug 51473
>
>         # Speed up dns resolution in some cases
>         vb.customize ['modifyvm', :id, '--natdnshostresolver1', 'on']
>         vb.customize ['modifyvm', :id, '--natdnsproxy1', 'on']
>
>
>
Setting these to OFF fixed the problem

      vb.customize ["modifyvm", :id, "--natdnsproxy1", "off"]
      vb.customize ["modifyvm", :id, "--natdnshostresolver1", "off"]

vagrant provision now completes in 45 seconds!

and nslookup from the guest is using the host's DNS (actually from the
network's router)

time nslookup slashdot.org
Server:         8.8.8.8
Address:        8.8.8.8#53

Non-authoritative answer:
Name:   slashdot.org
Address: 216.34.181.45

real    0m1.162s
user    0m0.041s
sys     0m0.063s