<s>
A	O
search	B-Protocol
domain	I-Protocol
is	O
a	O
domain	O
used	O
as	O
part	O
of	O
a	O
domain	O
search	O
list	O
.	O
</s>
<s>
The	O
domain	O
search	O
list	O
,	O
as	O
well	O
as	O
the	O
local	O
domain	O
name	O
,	O
is	O
used	O
by	O
a	O
resolver	O
to	O
create	O
a	O
fully	B-Protocol
qualified	I-Protocol
domain	I-Protocol
name	I-Protocol
(	O
FQDN	B-Protocol
)	O
from	O
a	O
relative	O
name	O
.	O
</s>
<s>
In	O
an	O
IPv4	O
environment	O
,	O
search	B-Protocol
domains	I-Protocol
are	O
often	O
set	O
via	O
DHCPv4	B-Protocol
,	O
along	O
with	O
the	O
local	O
domain	O
name	O
.	O
</s>
<s>
The	O
domain	O
search	O
list	O
is	O
configured	O
by	O
the	O
Domain	O
Search	O
Option	O
(	O
DHCPv4	B-Protocol
option	O
number	O
119	O
)	O
,	O
while	O
the	O
local	O
domain	O
name	O
is	O
configured	O
by	O
Domain	O
Name	O
(	O
DHCPv4	B-Protocol
option	O
number	O
15	O
)	O
.	O
</s>
<s>
The	O
Windows	B-Application
operating	I-Application
system	I-Application
,	O
however	O
,	O
does	O
not	O
understand	O
the	O
Domain	O
Search	O
Option	O
;	O
as	O
a	O
workaround	O
,	O
many	O
network	O
administrators	O
use	O
Group	O
Policy	O
Objects	O
to	O
set	O
the	O
domain	O
search	O
list	O
for	O
Windows	O
machines	O
.	O
</s>
<s>
In	O
an	O
IPv6	O
environment	O
,	O
the	O
domain	O
search	O
list	O
is	O
called	O
a	O
DNS	B-Protocol
Search	O
List	O
(	O
DNSSL	O
)	O
and	O
can	O
be	O
configured	O
by	O
Router	O
Advertisement	O
and	O
DHCP	B-Protocol
.	O
</s>
<s>
In	O
CentOS	O
Linux	O
search	B-Protocol
domain	I-Protocol
can	O
be	O
defined	O
by	O
editing	O
the	O
ifcfg	O
file	O
corresponding	O
to	O
the	O
network	O
.	O
</s>
<s>
In	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
the	O
setting	O
is	O
located	O
under	O
the	O
DNS	B-Protocol
tab	O
,	O
next	O
to	O
DNS	B-Protocol
server	O
settings	O
.	O
</s>
<s>
A	O
similar	O
setting	O
in	O
Microsoft	B-Application
Windows	I-Application
is	O
the	O
Connection-specific	O
DNS	B-Protocol
Suffix	O
.	O
</s>
<s>
When	O
looking	O
up	O
a	O
bare	O
name	O
in	O
DNS	B-Protocol
,	O
the	O
network	O
stack	O
will	O
add	O
the	O
search	B-Protocol
domains	I-Protocol
to	O
it	O
to	O
form	O
fully	B-Protocol
qualified	I-Protocol
domain	I-Protocol
names	I-Protocol
,	O
and	O
look	O
up	O
those	O
as	O
well	O
.	O
</s>
<s>
Some	O
ISPs	O
add	O
their	O
own	O
search	B-Protocol
domains	I-Protocol
via	O
DHCP	B-Protocol
settings	O
,	O
similar	O
to	O
how	O
they	O
add	O
DNS	B-Protocol
servers	O
and	O
other	O
networking	O
information	O
;	O
if	O
this	O
is	O
undesired	O
,	O
the	O
user	O
can	O
change	O
this	O
setting	O
to	O
"	O
.local	O
"	O
.	O
</s>
