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+<samba:parameter name="winbind expand groups"
+ context="G"
+ type="integer"
+ xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
+<description>
+ <para>This option controls the maximum depth that winbindd
+ will traverse when flattening nested group memberships
+ of Windows domain groups. This is different from the
+ <smbconfoption name="winbind nested groups"/> option
+ which implements the Windows NT4 model of local group
+ nesting. The &quot;winbind expand groups&quot;
+ parameter specifically applies to the membership of
+ domain groups.</para>
+
+ <para>This option also affects the return of non nested
+ group memberships of Windows domain users. With the
+ new default "winbind expand groups = 0" winbind does
+ not query group memberships at all.</para>
+
+ <para>Be aware that a high value for this parameter can
+ result in system slowdown as the main parent winbindd daemon
+ must perform the group unrolling and will be unable to answer
+ incoming NSS or authentication requests during this time.</para>
+
+ <para>The default value was changed from 1 to 0 with Samba 4.2.
+ Some broken applications (including some implementations of
+ newgrp and sg) calculate the group memberships of
+ users by traversing groups, such applications will require
+ "winbind expand groups = 1". But the new default makes winbindd
+ more reliable as it doesn't require SAMR access to domain
+ controllers of trusted domains.</para>
+</description>
+
+<value type="default">0</value>
+</samba:parameter>