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<samba:parameter name="domain master"
type="boolean"
context="G"
basic="1" advanced="1" developer="1"
xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
<description>
<para>
Tell <citerefentry><refentrytitle>smbd</refentrytitle> <manvolnum>8</manvolnum></citerefentry> to enable
WAN-wide browse list collation. Setting this option causes <command moreinfo="none">nmbd</command> to claim a
special domain specific NetBIOS name that identifies it as a domain master browser for its given
<smbconfoption name="workgroup"/>. Local master browsers in the same <smbconfoption name="workgroup"/> on
broadcast-isolated subnets will give this <command moreinfo="none">nmbd</command> their local browse lists,
and then ask <citerefentry><refentrytitle>smbd</refentrytitle> <manvolnum>8</manvolnum></citerefentry> for a
complete copy of the browse list for the whole wide area network. Browser clients will then contact their
local master browser, and will receive the domain-wide browse list, instead of just the list for their
broadcast-isolated subnet.
</para>
<para>
Note that Windows NT Primary Domain Controllers expect to be able to claim this <smbconfoption
name="workgroup"/> specific special NetBIOS name that identifies them as domain master browsers for that
<smbconfoption name="workgroup"/> by default (i.e. there is no way to prevent a Windows NT PDC from attempting
to do this). This means that if this parameter is set and <command moreinfo="none">nmbd</command> claims the
special name for a <smbconfoption name="workgroup"/> before a Windows NT PDC is able to do so then cross
subnet browsing will behave strangely and may fail.
</para>
<para>
If <smbconfoption name="domain logons">yes</smbconfoption>, then the default behavior is to enable the
<smbconfoption name="domain master"/> parameter. If <smbconfoption name="domain logons"/> is not enabled (the
default setting), then neither will <smbconfoption name="domain master"/> be enabled by default.
</para>
<para>
When <smbconfoption name="domain logons">Yes</smbconfoption> the default setting for this parameter is
Yes, with the result that Samba will be a PDC. If <smbconfoption name="domain master">No</smbconfoption>,
Samba will function as a BDC. In general, this parameter should be set to 'No' only on a BDC.
</para>
</description>
<value type="default">auto</value>
</samba:parameter>
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