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Description of problem:
The EXTERNAL SASL mech should only be advertised to clients if the server has a
useful mapping to attach it to.  For example, if SSL client certificate matching
is configured, or if ldapi:// support is implemented, and getpeername() is
available.

Version-Release number of selected component (if applicable):
Fedora DS 1.0.4

How reproducible:
Every time

Steps to Reproduce:
1. Setup a default install of fedora DS
2. Search the rootDSE for supportedSASLMechs on an ldap://, not TLS connection
3. Notice that EXTERNAL is listed
  
Actual results:
supportedsaslmechanisms: EXTERNAL
...

Expected results:
This should not appear

Additional info:

Apparenetly already pointed out by Howard Chu, OpenLDAP has the correct behaviour.

DS7.2 is not a valid milestone anymore. Anything thats set to DS7.2 should be
set to DS8.0. Will make further changes per bug council on 07/24/2007, after this.

Falls under the category of RFC correctness

Upstream ticket:
https://fedorahosted.org/389/ticket/220

Per triage: No plan to fix this in the short term.