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The fix in bug #1828354 (in 7.9 branch) is incomplete and does not work against Windows DC.

This is an additional fix needed to complete bug #1828354. A Windows DC implicitly adds a short name for each FQDN added to msDS-AdditionalDnsHostName, but it comes with a strage binary suffix "\0$" which we Samba should ignore.

As we don't ignore this this suffix the additonal dnshostnames are not added as entries to the KRB5 keytab we create. The change is simple enough that instead of just using the provided UTF8 string we use a conversion function from UTF8 to the configured unix charset.

If we don't fix this, we will not be able to create correct keytabs which will create problems for customers which need a valid keytab. The change is covered by upstream test and also will be tested by our QA.

The code only touches the 'net ads keytab create' command. No other components have been changes. It is easy to test and confirm that the tool is working correctly.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (samba bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:4069