Hello,

I've just noticed that kinit is not working for several but not all
accounts in our FreeIPA domain (4.4.0-14.el7.centos.7). I get the following
error:

on the client:

[root@caesium tiemen]# KRB5_TRACE=/dev/stdout kinit *dba*
[7827] 1498729905.996951: Resolving unique ccache of type KEYRING
[7827] 1498729905.997071: Getting initial credentials for d...@i.rdmedia.com
[7827] 1498729905.997811: Sending request (167 bytes) to I.RDMEDIA.COM
[7827] 1498729905.998340: Initiating TCP connection to stream
10.100.110.36:88
[7827] 1498729906.2356: Sending TCP request to stream 10.100.110.36:88
[7827] 1498729906.9304: Received answer (204 bytes) from stream
10.100.110.36:88
[7827] 1498729906.9334: Terminating TCP connection to stream
10.100.110.36:88
[7827] 1498729906.9621: Response was from master KDC
[7827] 1498729906.9683: Received error from KDC: -1765328359/Additional
pre-authentication required
*[7827] 1498729906.9780: Processing preauth types: 136, 133*
*[7827] 1498729906.9795: Received cookie: MIT*
*kinit: Generic preauthentication failure while getting initial credentials*

whereas

[root@caesium tiemen]# KRB5_TRACE=/dev/stdout kinit *admin*
[7869] 1498730079.918191: Resolving unique ccache of type KEYRING
[7869] 1498730079.918290: Getting initial credentials for
ad...@i.rdmedia.com
[7869] 1498730079.918896: Sending request (169 bytes) to I.RDMEDIA.COM
[7869] 1498730079.919370: Initiating TCP connection to stream
10.100.110.36:88
[7869] 1498730079.922958: Sending TCP request to stream 10.100.110.36:88
[7869] 1498730079.930832: Received answer (258 bytes) from stream
10.100.110.36:88
[7869] 1498730079.930857: Terminating TCP connection to stream
10.100.110.36:88
[7869] 1498730079.930977: Response was from master KDC
[7869] 1498730079.931039: Received error from KDC: -1765328359/Additional
pre-authentication required
*[7869] 1498730079.931106: Processing preauth types: 136, 19, 2, 133*
*[7869] 1498730079.931129: Selected etype info: etype aes256-cts, salt
"REDACTED", params ""*
*[7869] 1498730079.931139: Received cookie: MIT*

*Password for t...@i.rdmedia.com <t...@i.rdmedia.com>:*

What could explain this difference? Where can I look to debug this?


-- 
Tiemen Ruiten
Systems Engineer
R&D Media
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