<s>
The	O
Internet	O
Link	O
protocol	O
or	O
IL	B-Protocol
is	O
a	O
connection-based	O
transport-layer	B-Architecture
protocol	I-Architecture
designed	O
at	O
Bell	O
Labs	O
originally	O
as	O
part	O
of	O
the	O
Plan	B-Operating_System
9	I-Operating_System
operating	O
system	O
and	O
is	O
used	O
to	O
carry	O
9P	B-Operating_System
.	O
</s>
<s>
It	O
is	O
assigned	O
the	O
Internet	B-Protocol
Protocol	I-Protocol
number	I-Protocol
of	O
40	O
.	O
</s>
<s>
It	O
is	O
similar	O
to	O
TCP	B-Protocol
but	O
much	O
simpler	O
.	O
</s>
<s>
As	O
of	O
the	O
Fourth	O
Edition	O
of	O
Plan	B-Operating_System
9	I-Operating_System
,	O
2003	O
,	O
IL	B-Protocol
is	O
deprecated	O
in	O
favor	O
of	O
TCP/IP	O
because	O
it	O
does	O
n't	O
handle	O
long-distance	O
connections	O
well	O
.	O
</s>
