Re: /etc/hosts
On Fri, Jun 21, 2002 at 08:56:56PM +0100, john gennard wrote:
> The only line I have now in the file is:-
> 127.0.0.1 <machine name>.clara.co.uk <machine name>
Change this to:
127.0.0.1 localhost <machine name>.clara.co.uk <machine name>
or alternatively
127.0.0.1 localhost
<your ip> <machine name>.clara.co.uk <machine name>
> Trying to ping localhost now says 'unknown host host' and pinging
> localhost says 'unknown host localhost' and this was not the case
> before I changed /etc/hosts. I've never understood how loopback
> works and have assumed 127.0.0.1 was how all machines refer to
> themselves.
127.0.0.1 does always refer the machine to itself[1], but humans use
"localhost". Such translations need to occur in the /etc/hosts file
(or in DNS, but that's secondary to your problem)
> After a couple of years being mystified by FQDN's I thought at long
> last I did understood - now I just don't know.
Fully Qualified Domain Name, it's the name used to get your IP from DNS
without using or requiring local assumptions.
For instance "www.debian.org" is "klecker.debian.org" and both are the
FQDN. "klecker" is enough to get to the machine from itself or other
machines configured to assume "debian.org" but the full name is required
to get to it from the rest of the world.
1: Assuming you have a lo device and it's configured, etc, etc... Too
much complication doesn't do anything but muddle the answer.
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