Description of problem:
After a fresh install of Fedora 12 the hostname entered during installation process is mapped to 127.0.0.1 in /etc/hosts.
In my case this broke rpc.svcgssd but I suspect there may be more ramifications because of mapping the hostname of the machine to localhost.

I use kerberized NFSv4 on my Network.
This uses a nfs machine key that is stored in /etc/krb5.keytab and is looked up by its name nfs/<hostname>@<realm>.
rpc.svcgssd cannot find the key in case the hostname is mapped to 127.0.0.1 in /etc/hosts.

The key problem I suspect to cause this is the behaviour of hostname.
Let hostname be somehost.somedomain.tld.
After installing Fedora you can look up the system's hostname as follows:

# hostname
somehost.somedomain.tld

# hostname -s
somehost

# hostname -d
localdomain

The answer of "hostname -d" is wrong. It is supposed to be somedomain.tld
Thats the reason why rpc.svcgssd is unable to find the mashine key in krb5.keytab.

After removing the hostname from /etc/hosts (or enter it correctly mapped to its IP) system's hostname is reported as follows:

# hostname
somehost.somedomain.tld

# hostname -s
somehost

# hostname -d
somedomain.tld


How reproducible:

Steps to Reproduce:
1. fresh install Fedora 12 with hostname (e.g. somehost.somedomain.tld)

Actual results:
# hostname -d
localdomain

Expected results:
# hostname -d
somedomain.tld

I reported this for package seetup because /etc/hosts is part of setup package. I hope it's the right one to refer to.


Workarround:
Correct /etc/hosts by removing the hostname or map it to its correct IP address on the machine's network.