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+++ This bug was initially created as a clone of Bug #2076505 +++

+++ This bug was initially created as a clone of Bug #2076504 +++

for 8.6 zstream

Description of problem:

From https://bugzilla.samba.org/show_bug.cgi?id=15046:

The samba testsuite has found that PAM Kerberos authentication can fail with an incorrect clock skew too great error. In the samba testsuite the server and the client run in the same machine.

The reason is that the time_offset passed to kerberos_return_pac() in winbindd_raw_kerberos_login() can be wrong. This time_offset is retrieved from an ADS_STRUCT directly casted from domain->private_data, when domain->private_data can point to a winbind_internal_pipes struct.

We have to remove the private_data field from winbindd_domain struct and use typed pointers.