Hi there,

I'm currently trying to use the 'AD Trust for Legacy Clients' freeIPA setup 
(described here: 
http://www.freeipa.org/images/0/0d/FreeIPA33-legacy-clients.pdf) to be able to 
autenticate AIX 7.1 clients against an AD domain using LDAP. After the trust 
was created all seems to work well on the freeIPA server. I can also do a 
lookup of AD users and groups on an AIX test server.

But as soon as I want to log in on the AIX system I get an SSSD error on the 
freeIPA server in krb5_child.log (debug_level = 10):
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.590260: AS key obtained 
for encrypted timestamp: aes256-cts/2F5D
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.590326: Encrypted 
timestamp (for 1426778442.525165): plain 
301AA011180F32303135303331393135323034325AA105020308036D, encrypted 
9B3299264F09E50D63D84B385A09A4C64D44116A02B58FFF12830B39F88722CD9B792F5ABA0653578DE9138B91D29C17C197453D8B8A5E7A
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.590349: Preauth module 
encrypted_timestamp (2) (flags=1) returned: 0/Success
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.590360: Produced preauth 
for next request: 2
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.590384: Sending request 
(238 bytes) to EXAMPLE.CORP
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.591325: Resolving 
hostname dct020.example.corp.
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.591889: Sending initial 
UDP request to dgram 192.168.143.1:88
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.636127: Received answer 
from dgram 192.168.143.1:88
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.636626: Response was not 
from master KDC
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.636667: Received error 
from KDC: -1765328360/Preauthentication failed
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.636698: Preauth tryagain 
input types: 16, 14, 19, 2
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.636728: Retrying AS 
request with master KDC
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.636741: Getting initial 
credentials for bpr...@example.corp
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] 
[sss_child_krb5_trace_cb] (0x4000): [12775] 1426778442.636787: Sending request 
(160 bytes) to EXAMPLE.CORP (master)
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] [get_and_save_tgt] 
(0x0020): 979: [-1765328360][Preauthentication failed]
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] [map_krb5_error] 
(0x0020): 1040: [-1765328360][Preauthentication failed]
(Thu Mar 19 16:20:42 2015) [[sssd[krb5_child[12775]]]] [k5c_send_data] 
(0x0200): Received error code 1432158214

If I do the same with 'KRB5_TRACE=/dev/stderr kinit bpr...@example.corp':
[12299] 1426773524.361785: AS key obtained for encrypted timestamp: 
aes256-cts/B997
[12299] 1426773524.361850: Encrypted timestamp (for 1426773524.277583): plain 
301AA011180F32303135303331393133353834345AA1050203043C4F, encrypted 
ED9CF995617740C4B14DB9CC84187E3505B664FE5C0AD16D19477E912F5400FB2C4665A090E3A37CD749535B3C80595809E14D15CB3527C0
[12299] 1426773524.361876: Preauth module encrypted_timestamp (2) (flags=1) 
returned: 0/Success
[12299] 1426773524.361880: Produced preauth for next request: 2
[12299] 1426773524.361901: Sending request (238 bytes) to EXAMPLE.CORP
[12299] 1426773524.363002: Resolving hostname dct020.EXAMPLE.corp.
[12299] 1426773524.363841: Sending initial UDP request to dgram 192.168.141.1:88
[12299] 1426773524.368089: Received answer from dgram 192.168.141.1:88
[12299] 1426773524.368482: Response was not from master KDC
[12299] 1426773524.368500: Received error from KDC: -1765328332/Response too 
big for UDP, retry with TCP
[12299] 1426773524.368506: Request or response is too big for UDP; retrying 
with TCP
[12299] 1426773524.368511: Sending request (238 bytes) to EXAMPLE.CORP (tcp 
only)
[12299] 1426773524.368953: Resolving hostname dct030.EXAMPLE.corp.
[12299] 1426773524.370056: Initiating TCP connection to stream 192.168.143.5:88
[12299] 1426773524.375140: Sending TCP request to stream 192.168.143.5:88
[12299] 1426773524.383801: Received answer from stream 192.168.143.5:88
[12299] 1426773524.384237: Response was not from master KDC
[12299] 1426773524.384263: Processing preauth types: 19
[12299] 1426773524.384271: Selected etype info: etype aes256-cts, salt 
"EXAMPLE.CORPBPrins", params ""
[12299] 1426773524.384275: Produced preauth for next request: (empty)
[12299] 1426773524.384282: AS key determined by preauth: aes256-cts/B997
[12299] 1426773524.384329: Decrypted AS reply; session key is: rc4-hmac/39AB
[12299] 1426773524.384333: FAST negotiation: unavailable
[12299] 1426773524.384357: Initializing KEYRING:persistent:0:krb_ccache_rhX3V4v 
with default princ bpr...@example.corp
[12299] 1426773524.384400: Removing bpr...@example.corp -> 
krbtgt/example.c...@example.corp from KEYRING:persistent:0:krb_ccache_rhX3V4v
[12299] 1426773524.384407: Storing bpr...@example.corp -> 
krbtgt/example.c...@example.corp in KEYRING:persistent:0:krb_ccache_rhX3V4v
[12299] 1426773524.384469: Storing config in 
KEYRING:persistent:0:krb_ccache_rhX3V4v for krbtgt/example.c...@example.corp: 
pa_type: 2
[12299] 1426773524.384484: Removing bpr...@example.corp -> 
krb5_ccache_conf_data/pa_type/krbtgt\/EXAMPLE.CORP\@EXAMPLE.CORP@X-CACHECONF: 
from KEYRING:persistent:0:krb_ccache_rhX3V4v
[12299] 1426773524.384492: Storing bpr...@example.corp -> 
krb5_ccache_conf_data/pa_type/krbtgt\/EXAMPLE.CORP\@EXAMPLE.CORP@X-CACHECONF: 
in KEYRING:persistent:0:krb_ccache_rhX3V4v

Any ideas?

Thanks,

Bobby

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