I have added 2 more IPs and PHP is not working on those domains. Looks bizarre. I must've done something wrong but cannot figure out what.

IPs:, and 333.333.333.333
Domains: 1.example.com, 2.example.com, 3.example.com

NSLOOKUP confirms that domains are bind to IPs correctly

OS UBUNTU SERVER 12.04 on Virtual Machine (VPS) with one network interface


eth0 Link encap:Ethernet HWaddr 00:16:3e:0f:2a:4f
inet addr: Bcast: Mask:

lo Link encap:...


auto lo eth0

iface lo inet loopback

iface eth0 inet static

/etc/rc.local - this is how I have 2 extra IPs added

ip address add dev lo
ip address add 333.333.333.333 dev lo

exit 0

APACHE2 / 2.4.3


     DocumentRoot "/path/1.example.com/public_html/"
     ServerName 1.example.com
     AddType application/x-httpd-php .php

    DocumentRoot "/path/2.example.com/public_html/"
    ServerName 3.example.com
    AddType application/x-httpd-php .php

<VirtualHost 333.333.333.333>
    DocumentRoot "/path/3.example.com/public_html/"
    ServerName 3.example.com
    AddType application/x-httpd-php .php

So now 1.example.com works correctly, 2.example.com and 3.example.com (on additional IPs) - "lost" PHP. I mean they're served by apache, but php is not working! And nothing in error.logs!

Lotsa configs, so thanks for pations, guys.

  • You should define ports for these vhosts: VirtualHost Mar 29, 2013 at 14:37

2 Answers 2


You need to add these IP-addresses to eth0, not to the loopback device to make them accessible from the outside. Assuming your VPS-provider did the right thing with the routing, it should work right away.

  • Well, provider did mentioned that 'the easiest way' is to do as I show above. The easiest but not the only one. But what I do not understand is why domain_2.com/index.html works fine , but domain_2.com/index.php prints php code instead of executing it! Probably I should read more about how loopback works. Mar 29, 2013 at 14:38


Ah. You're not using the Ubuntu-provided apache/php etc. That's asking for trouble, so please get rid of that and install the Ubuntu packages. Always stick to what your distro provides, unless you have a very good reason not to. Php and virtualhosts are configured much nicer in the Ubuntu way of configuring, that'll solve that problem.

Your IP address config is also broken, these addresses should not be on the lo interface. I'm surprised it works (and guessing that it actually doesn't).

  • If I do as you say - I will never learn =) Mar 29, 2013 at 14:49
  • That's complete nonsense of course. You can learn a lot by looking at how Ubuntu has configured apache and why that way of configuring is a good idea. All you do now is set yourself up for security breaches, lack of understanding and an apache setup badly integrated with the OS. Mar 29, 2013 at 14:52
  • Look, I had Ubuntu installed with bind and ssh and nothing else. Then I downloaded latest version of Apache and latest version of PHP. Spend 3 days compiling and installing those and related libraries. And this way I learned much more then I could have if I chose to use apt-get. Don't you agree? Mar 29, 2013 at 15:03
  • No I don't. You've wasted time compiling apache wich you could have spent learning how it works, which is a far more useful piece of knowledge. You now also need to keep doing it to make sure you stay up to date with security patches, which is a waste of time if you can rely on your distro to do this. Mar 29, 2013 at 15:07
  • About security... you made me think. Mar 29, 2013 at 15:09

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