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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20021003

Description of problem:
After updating os via RHN/up2date, I cannot change the dns settings under the
dns tab of redhat-config-network. When I change dns address for primary or
secondary, and click apply I get the following:
Traceback (most recent call last):
  File "/usr/sbin/neat", line 496, in on_applyButton_clicked
    self.save()
  File "/usr/sbin/neat", line 319, in save
    self.saveDevices()
  File "/usr/sbin/neat", line 326, in saveDevices
    devicelist.save()
  File "/usr/sbin/../share/redhat-config-network/netconfpkg/NCDeviceList.py",
line 145, in save
    os.write(fp2, ipc.network()+'/'+ipc.prefix()+" via "+route.Gateway+"\n")
  File "/usr/sbin/../share/redhat-config-network/netconfpkg/ipcalc.py", line 58,
in network
    self.prefix()
  File "/usr/sbin/../share/redhat-config-network/netconfpkg/ipcalc.py", line 41,
in prefix
    self._prefix = re.match("PREFIX=(\d+)", text).groups()[0]
AttributeError: 'NoneType' object has no attribute 'groups'


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


How reproducible:
Always

Steps to Reproduce:
1.Start redhat-config-network
2.Under dns tab change dns ip address
3.Click apply
    

Actual Results:  execption occured message

Expected Results:  dns ip addresses changed

Additional info: