<s>
The	O
Site	B-Protocol
Multihoming	I-Protocol
by	I-Protocol
IPv6	I-Protocol
Intermediation	I-Protocol
(	O
SHIM6	B-Protocol
)	O
protocol	O
is	O
an	O
Internet	B-Protocol
Layer	I-Protocol
defined	O
in	O
RFC	O
5533	O
.	O
</s>
<s>
The	O
SHIM6	B-Protocol
architecture	O
defines	O
failure	O
detection	O
and	O
locator	O
pair	O
exploration	O
functions	O
.	O
</s>
<s>
To	O
achieve	O
this	O
,	O
hints	O
provided	O
by	O
upper	O
protocols	O
such	O
as	O
Transmission	B-Protocol
Control	I-Protocol
Protocol	I-Protocol
(	O
TCP	O
)	O
are	O
used	O
,	O
or	O
specific	O
SHIM6	B-Protocol
packet	O
probes	O
.	O
</s>
<s>
The	O
ability	O
to	O
change	O
locators	O
while	O
a	O
communication	O
is	O
being	O
held	O
introduces	O
security	O
problems	O
,	O
so	O
mechanisms	O
based	O
on	O
applying	O
cryptography	O
to	O
the	O
address	O
generation	O
process	O
(	O
Cryptographically	B-Protocol
Generated	I-Protocol
Addresses	I-Protocol
,	O
CGA	O
)	O
,	O
or	O
on	O
bounding	O
the	O
addresses	O
to	O
the	O
prefixes	O
assigned	O
to	O
a	O
host	O
through	O
hash-based	O
addresses	O
were	O
defined	O
.	O
</s>
<s>
An	O
implementation	O
of	O
shim6	B-Protocol
in	O
the	O
Linux	O
kernel	O
is	O
available	O
under	O
the	O
name	O
LinShim6	O
.	O
</s>
