[Bug 1319320] Re: samba does not provide netlogon infos

[Robie Basak]

If someone can prepare a backport, please follow the steps at
https://wiki.ubuntu.com StableReleaseUpdates#Procedure to have Trusty
updated.

All the steps documented there need to be followed. In particular, I'm
concerned that we:

1) Explain the bug well enough so the SRU team (who are probably not
familiar with this package) can understand the real user impact in terms
of use case so they can make a decision as to whether backporting the
fix to stable releases justifies the regression risk to existing,
unaffected users.

2) Make sure that the fixing this in a stable Ubuntu release does not
regress existing users of the module not affected by this bug (eg. other
architectures or ways of consuming this module).

3) Have a test case that can be followed by someone not familiar with
the package for SRU verification purposes.

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Title:
  samba does not provide netlogon infos

Status in samba:
  Unknown
Status in realmd package in Ubuntu:
  Invalid
Status in samba package in Ubuntu:
  Fix Released
Status in sssd package in Ubuntu:
  Invalid
Status in realmd source package in Trusty:
  New
Status in samba source package in Trusty:
  Confirmed
Status in sssd source package in Trusty:
  New

Bug description:
  When trying to join a domain using realmd, this is displayed:

  sysoperator at mem4:~$ realm join --verbose test2dc.mdom.com
   * Resolving: _ldap._tcp.test2dc.mdom.com
   * Performing LDAP DSE lookup on: 192.168.15.23
   ! Received invalid or unsupported Netlogon data from server
  realm: Cannot join this realm

  This problem is well know and it has been fixed in Samba 4.1.7.
  Unfortunately, the samba version provided by apt is 4.1.6

  This problem also surface when using SSSD, here's an extract of SSSD
  log file:

  (Tue May 13 14:12:47 2014) [sssd[be[test2dc.mdom.com]]] [sdap_get_generic_ext_step] (0x0400): calling ldap_search_ext with [(&(DnsDomain=test2dc.mdom.com)(NtVer=\14\00\00\00))][].
  (Tue May 13 14:12:47 2014) [sssd[be[test2dc.mdom.com]]] [sdap_get_generic_ext_step] (0x1000): Requesting attrs: [netlogon]
  (Tue May 13 14:12:47 2014) [sssd[be[test2dc.mdom.com]]] [sdap_get_generic_ext_step] (0x2000): ldap_search_ext called, msgid = 6
  (Tue May 13 14:12:47 2014) [sssd[be[test2dc.mdom.com]]] [sdap_process_result] (0x2000): Trace: sh[0x1b60be0], connected[1], ops[0x1b6db50], ldap[0x1b61680]
  (Tue May 13 14:12:47 2014) [sssd[be[test2dc.mdom.com]]] [sdap_process_result] (0x2000): Trace: ldap_result found nothing!
  (Tue May 13 14:12:47 2014) [sssd[be[test2dc.mdom.com]]] [sdap_process_result] (0x2000): Trace: sh[0x1b60be0], connected[1], ops[0x1b6db50], ldap[0x1b61680]
  (Tue May 13 14:12:47 2014) [sssd[be[test2dc.mdom.com]]] [sdap_process_message] (0x4000): Message type: [LDAP_RES_SEARCH_RESULT]
  (Tue May 13 14:12:47 2014) [sssd[be[test2dc.mdom.com]]] [sdap_get_generic_ext_done] (0x0400): Search result: Success(0), no errmsg set
  (Tue May 13 14:12:47 2014) [sssd[be[test2dc.mdom.com]]] [ad_master_domain_netlogon_done] (0x0080): No netlogon data available. Flat name might not be usable

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