Failed to create virtual server : Failed to work out externally visible IP address

That’s dev server @my home, behind tp-link router.

I no longer can create sub-servers via Virtualmin,
Last month everything was OK, now it throws an error:
Failed to create virtual server : Failed to work out externally visible IP address

Last thing I did was Virtualmin update and enable DHCP service running for @home PXE boot purposes.

Can <–>ping world both directions. All websites online. But can’t create new ones.

I’m using External IP address Same as real address (

Operating system CentOS Linux 5.9 / Webmin version 1.620 / Virtualmin version 3.98.gpl GPL

Thanks in advance 4 any help.

OK, i managed to find the issue

Virtualmin -> System Settings -> Virtualmin Configuration -> Network Settings
changed from :
“Network interface for virtual addresses” eth0


“Network interface for virtual addresses” Detect automatically

Now the issue is gone. I can create new virtualmin servers.

I have only one IF (eth0) and /etc/sysconfig/network-scripts/ifcfg-eth0 hadn’t changed so I have no clue what causes this behaviour anyway.

BUT!:Now I have a yellow virtualmin message
“Virtualmin’s configuration has not been checked since it was last updated. Click the button below to verify it now.” and when I click Recheck it switches “Network interface for virtual addresses” option back to eth0 which spoils the coffee over again.

What helps is an IP entry in ->
“Default virtual server IP address” in my case. Previously this option was set to “From network interface”.

That’s weird because all my /etc/httpd/conf/httpd.conf per vhost entries always got
< VirtualHost *:80 > and putting that IP does not have any impact on this.

Eveything looks & works fine.
Have no idea what cause that mess.

Thank you.
You have to set it up and restart.