<s>
A	O
Solicited-Node	B-Protocol
multicast	I-Protocol
address	I-Protocol
is	O
an	O
IPv6	B-Protocol
multicast	O
address	O
used	O
by	O
the	O
Neighbor	B-Protocol
Discovery	I-Protocol
Protocol	I-Protocol
to	O
verify	O
whether	O
a	O
given	O
IPv6	B-Protocol
address	O
is	O
already	O
used	O
by	O
the	O
local-link	O
or	O
not	O
,	O
through	O
a	O
process	O
called	O
DAD	O
(	O
Duplicate	O
Address	O
Detection	O
)	O
.	O
</s>
<s>
This	O
allows	O
NDP	O
to	O
assign	O
IPv6	B-Protocol
addresses	O
to	O
hosts	O
using	O
SLAAC	O
(	O
IPv6	B-Protocol
Stateless	O
Address	O
Autoconfiguration	O
)	O
without	O
the	O
risk	O
of	O
assigning	O
addresses	O
already	O
in	O
use	O
.	O
</s>
<s>
The	O
Solicited-Node	O
multicast	O
addresses	O
are	O
generated	O
from	O
the	O
host	O
's	O
IPv6	B-Protocol
unicast	B-Protocol
or	O
anycast	B-Protocol
address	O
,	O
and	O
each	O
interface	O
must	O
have	O
a	O
Solicited-Node	B-Protocol
multicast	I-Protocol
address	I-Protocol
associated	O
with	O
it	O
.	O
</s>
<s>
NDP	O
sends	O
out	O
a	O
Neighbor	O
Solicitation	O
message	O
(	O
ICMPv6	O
Type	O
135	O
)	O
to	O
the	O
Solicited-Node	B-Protocol
multicast	I-Protocol
address	I-Protocol
of	O
the	O
IPv6	B-Protocol
unicast	B-Protocol
or	O
anycast	B-Protocol
address	O
it	O
plans	O
to	O
assign	O
using	O
SLAAC	O
,	O
and	O
if	O
a	O
host	O
is	O
present	O
in	O
that	O
group	O
,	O
it	O
will	O
respond	O
with	O
a	O
Neighbor	O
Advertisement	O
message	O
(	O
ICMPv6	O
Type	O
136	O
)	O
,	O
and	O
NDP	O
will	O
know	O
that	O
the	O
IPv6	B-Protocol
unicast	B-Protocol
or	O
anycast	B-Protocol
address	O
it	O
is	O
trying	O
to	O
assign	O
is	O
already	O
in	O
use	O
.	O
</s>
<s>
A	O
Solicited-Node	O
address	O
is	O
created	O
by	O
taking	O
the	O
least-significant	O
24	O
bits	O
of	O
a	O
unicast	B-Protocol
or	O
anycast	B-Protocol
address	O
and	O
appending	O
them	O
to	O
the	O
prefix	O
.	O
</s>
<s>
Assume	O
a	O
host	O
with	O
a	O
unicast/anycast	O
IPv6	B-Protocol
address	O
of	O
.	O
</s>
<s>
Its	O
Solicited-Node	B-Protocol
multicast	I-Protocol
address	I-Protocol
will	O
be	O
.	O
</s>
