+++ This bug was initially created as a clone of Bug #530659 +++

Description of problem:

    Unable to register RedHat 5 Enterprise Server for software updates.

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

    /usr/share/rhn/up2date_client/rhnregGui.py

How reproducible:

    Configure /etc/sysconfig to enable firstboot.
    Follow the prompts and attempt to register for updates.
    run 'yum update'

Steps to Reproduce:

    cp -pr /etc/sysconfig/firstboot /etc/sysconfig/firstboot.bak
    rm /etc/sysconfig/firstboot
    chkconfig --list firstboot
    chkconfig --level 35 firstboot on
    chkconfig --list firstboot
    shutdown -r now
    (Follow the prompts and attempt to register for updates)
    yum update
  
Actual results (in /var/log/up2date):

    up2date 
    Traceback (most recent call last):
      File "/usr/share/rhn/up2date_client/rhnregGui.py", line 949, in populateProfile
        if ipaddr:
    exceptions.UnboundLocalError: local variable 'ipaddr' referenced before assignment

Actual results (on 'yum update'):

    Loaded plugins: rhnplugin, security
    Error: Cannot retrieve repository metadata (repomd.xml) for repository: rhel-i386-server-5. Please verify its path and try again

Expected results:

    Successful registration for software updates.
    Successful execution of 'yum update'

Additional info: