Description of problem:

NFS installation crashes just after entering the server name and the path name.

The 'URL' installation method also ends up the same result after retrieving install.img.

Version-Release number of selected component (if applicable):

anaconda-11.4.1.38-1

How reproducible:

Every time.

Steps to Reproduce:
1. Start installer with 'askmethod'.
2. Choose language and keyboard.
3. Select installation method 'NFS directory'.
4. Configure TCP/IP with:
   Enable IPv4 Support with DHCP
   Disable IPv6 Support
6. Enter the NFS server and the directory.

  
Actual results:

The installer crashes with the message below:

Running anaconda 11.4.1.38, the Fedora system installer - please wait...
04:27:08 Starting graphical installation...
Traceback (most recent call last):
  File "/usr/bin/anaconda", line 857, in <module>
    anaconda.id = instClass.installDataClass(anaconda, extraModules, opts.display_mode, anaconda.backend)
  File "/usr/lib/anaconda/instdata.py", line 335, in __init__
    self.reset()
  File "/usr/lib/anaconda/instdata.py", line 66, in reset
    self.network = network.Network()
  File "/usr/lib/anaconda/network.py", line 252, in __init__
    if isys.isDeviceDHCP(dev):
  File "/usr/lib/anaconda/isys.py", line 930, in isDeviceDHCP
    ip4_setting = settings['ipv4']
KeyError: 'ipv4'
install exited abnormally [1/1]
sending termination signals...done
sending kill signals...done
disabling swap...
unmounting filesystems...
        /mnt/runtime done
        disabling /dev/loop0 LOOP_CLR_FD failed: 6
        /proc done
        /dev/pts done
        /sys done
        /mnt/stage2 done
        /selinux done
you may safely reboot your system

Expected results:

The installer proceeds.

Additional info: