Apache can't run : mod_unique_id error

[Kata Goto]

Hello,
thank you for your answer,
I have only a problem : the server that I'm trying to install is a
developpement distant server, I just want to test my PHP pages, I don't want
a DNS.
My */etc/hosts* is simple :

> ::1                     localhost localhost.my.domain
> 127.0.0.1               localhost localhost.my.domain xx.xxx.xx.xx
>

and my */etc/nsswitch.conf* too :

> group: compat
> group_compat: nis
> hosts: files dns
> networks: files
> passwd: compat
> passwd_compat: nis
> shells: files
> services: compat
> services_compat: nis
> protocols: files
> rpc: files
>

I only want to connect my server with his external IP, does it need a DNS
service ?

By advance,
Thanks a lot