I've switched my CentOS machine from DHCP to static routing, using telnet to connect to it has gone from practically instantaneous, to taking around 30 seconds for the initial login prompt to display.

[Apparently,](http://www.unix.com/showthread.php?t=35568) this has something to do with the server doing a reverse DNS lookup to figure out who is connecting to the box, which relies on the hosts file.

Should I add something to /etc/hosts to speed up the process? My file is extremely limited right now, this is pretty much a fresh install.

```
[root@Azaz07]# cat /etc/hosts
127.0.0.1       localhost.localdomain localhost
::1     localhost6.localdomain6 localhost6

```

Telnet0 done locally responds right away.