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Description of problem:
Can add multiple users specifying the same uid.
ipa user-add one --uid=5000
ipa user-add two --uid=5000

Both are added with same UIDs

Can kinit using both users.

# getent passwd one
one:*:5000:5000:one:/home/one:/bin/sh
# getent passwd two
#
Nothing is returned for user two


ipa user-find --all
lists both users with same UID.


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


How reproducible:


Steps to Reproduce:
1.ipa user-add one --uid=5000
2. ipa user-add two --uid=5000

  
Actual results:
allows user two to be added

Expected results:
An error indicating UID has already assigned

Additional info:

Missed indicating version above:
am using:
ipa-server-2.0.0-21.el6.x86_64

And can always reproduce.

Blocking the IPA 2.1 tracker bug.

*** This bug has been marked as a duplicate of bug 693483 ***