<s>
Packet	B-Protocol
concatenation	I-Protocol
is	O
a	O
computer	O
networking	O
optimization	O
that	O
coalesces	O
multiple	O
packets	B-Protocol
under	O
a	O
single	O
header	O
.	O
</s>
<s>
The	O
use	O
of	O
packet	B-Protocol
containment	O
reduces	O
the	O
overhead	O
at	O
the	O
physical	B-Application
and	O
link	B-Protocol
layers	I-Protocol
.	O
</s>
