Description of problem:
Trying to run any command related to yum results in an error output.  This also is seen in the GUI package manager (cannot use at all).

Ranking this as urgent as this blocks me from updating any and all packages.

This started today.  The most recent package updates were the kernel update a few days ago along with the latest nvidia driver. 


How reproducible:
Every time

Steps to Reproduce:
1. terminal --> sudo yum update
2.
3.
  
Actual results:
Error message below

Expected results:
Package list udpated

Additional info:
Loaded plugins: langpacks, presto, refresh-packagekit
Adding en_US to language list
Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in <module>
    yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 258, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 113, in main
    result, resultmsgs = base.doCommands()
  File "/usr/share/yum-cli/cli.py", line 392, in doCommands
    self._getTs(needTsRemove)
  File "/usr/lib/python2.7/site-packages/yum/depsolve.py", line 99, in _getTs
    self._getTsInfo(remove_only)
  File "/usr/lib/python2.7/site-packages/yum/depsolve.py", line 110, in _getTsInfo
    pkgSack = self.pkgSack
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 827, in <lambda>
    pkgSack = property(fget=lambda self: self._getSacks(),
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 617, in _getSacks
    self.repos.populateSack(which=repos)
  File "/usr/lib/python2.7/site-packages/yum/repos.py", line 283, in populateSack
    sack.populate(repo, mdtype, callback, cacheonly)
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 163, in populate
    if self._check_db_version(repo, mydbtype):
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 221, in _check_db_version
    return repo._check_db_version(mdtype)
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1224, in _check_db_version
    repoXML = self.repoXML
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1413, in <lambda>
    repoXML = property(fget=lambda self: self._getRepoXML(),
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1405, in _getRepoXML
    self._loadRepoXML(text=self)
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1395, in _loadRepoXML
    return self._groupLoadRepoXML(text, self._mdpolicy2mdtypes())
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1370, in _groupLoadRepoXML
    if self._commonLoadRepoXML(text):
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 1198, in _commonLoadRepoXML
    result = self._getFileRepoXML(local, text)
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 985, in _getFileRepoXML
    size=102400) # setting max size as 100K
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 801, in _getFile
    result = self.grab.urlgrab(misc.to_utf8(relative), local,
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 520, in <lambda>
    grab = property(lambda self: self._getgrab())
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 515, in _getgrab
    self._setupGrab()
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 487, in _setupGrab
    self._grab = mgclass(self._grabfunc, self.urls,
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 677, in <lambda>
    urls = property(fget=lambda self: self._geturls(),
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 674, in _geturls
    self._baseurlSetup()
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 631, in _baseurlSetup
    self.mirrorurls = self._replace_and_check_url(mirrorurls)
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 657, in _replace_and_check_url
    (s,b,p,q,f,o) = urlparse.urlparse(url)
  File "/usr/lib64/python2.7/urlparse.py", line 134, in urlparse
    tuple = urlsplit(url, scheme, allow_fragments)
  File "/usr/lib64/python2.7/urlparse.py", line 200, in urlsplit
    raise ValueError("Invalid IPv6 URL")
ValueError: Invalid IPv6 URL