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o
th
e
i
n
ter
n
et.
T
h
er
e
is
cu
r
r
en
t
l
y
t
wo
ad
d
r
ess
in
g
s
c
h
e
m
e
th
at
ar
e
co
m
m
o
n
l
y
u
s
ed
in
id
en
ti
f
y
in
g
I
o
T
d
ev
ices.
Na
m
el
y
E
lectr
o
n
ic
P
r
o
d
u
ct
C
o
d
e
(
E
P
C
)
an
d
I
P
v
6
,
it
ca
n
u
n
iq
u
el
y
a
s
s
i
g
n
b
illi
o
n
o
f
ad
d
r
ess
to
an
y
co
n
n
ec
ted
d
ev
ices [
6
]
.
Fe
w
ad
d
r
ess
in
g
s
c
h
e
m
e
in
I
P
v
6
r
esear
ch
h
av
e
b
ee
n
ca
r
r
ied
o
u
t
s
u
c
h
as
t
h
e
v
ar
ia
n
ce
o
f
Do
u
b
le
A
d
d
r
ess
Dete
ctio
n
(
D
A
D)
[
7
-
8
]
,
L
o
w
-
E
n
er
g
y
ADd
r
ess
A
l
lo
ca
tio
n
Sc
h
e
m
e
(
L
E
A
D
S),
Sp
atial
I
P
A
d
d
r
ess
(
SIP
A
)
an
d
C
L
OS
A
(
C
L
Ock
Sk
e
w
A
d
d
r
ess
i
n
g
Sc
h
e
m
e)
[
9
]
.
1
.
2
.
Ra
nd
o
m
nes
s
T
h
e
n
ee
d
f
o
r
r
an
d
o
m
n
u
m
b
er
s
co
m
es
f
r
o
m
v
ar
io
u
s
C
r
y
p
to
g
r
ap
h
ic
ap
p
licatio
n
.
C
r
y
p
to
g
r
ap
h
ic
ap
p
licatio
n
u
s
e
r
an
d
o
m
b
it
n
u
m
b
er
is
v
ar
io
u
s
p
o
in
t.
A
r
a
n
d
o
m
b
it
n
u
m
b
er
ca
n
b
e
in
te
r
p
r
eted
as
r
esu
lt
o
f
f
lip
p
in
g
a
co
in
w
it
h
s
id
e
lab
el
1
o
r
0
.
T
h
e
p
r
o
b
ab
ilit
y
ea
ch
f
lip
g
e
n
er
ati
n
g
0
o
r
1
is
½
o
r
5
0
%
ea
ch
ti
m
e.
T
h
e
cu
r
r
en
t
r
es
u
lt
d
o
es
n
o
t
a
f
f
ec
t
th
e
f
u
tu
r
e
g
en
er
ated
n
u
m
b
er
.
T
h
is
is
t
h
e
p
er
f
ec
t
e
x
a
m
p
le
o
f
R
a
n
d
o
m
n
u
m
b
er
g
en
er
ato
r
,
w
h
er
e
t
h
e
n
e
x
t n
u
m
b
er
ca
n
n
o
t b
e
p
r
ed
icted
[
1
0
]
.
T
h
er
e
is
t
w
o
t
y
p
e
o
f
r
a
n
d
o
m
n
u
m
b
er
g
en
er
atio
n
.
T
h
e
f
ir
s
t
t
y
p
e
is
Har
d
w
ar
e
b
ase
R
a
n
d
o
m
Nu
m
b
er
Gen
er
ato
r
(
R
NG)
o
r
T
r
u
e
R
NG,
w
h
er
e
t
h
e
s
o
u
r
ce
o
f
en
tr
o
p
y
i
s
a
n
o
n
-
d
eter
m
i
n
is
tic
s
o
u
r
ce
(
i.e
.
E
lectr
ical
No
is
e
f
r
o
m
Mic
r
o
p
r
o
ce
s
s
o
r
P
in
)
.
T
h
e
o
u
tp
u
t
o
f
R
NG
ca
n
b
e
u
s
e
d
ir
ec
tl
y
o
r
as
a
f
ee
d
to
p
s
eu
d
o
r
an
d
o
m
g
en
er
ato
r
.
T
h
e
p
s
eu
d
o
r
an
d
o
m
n
u
m
b
e
r
g
en
er
ato
r
(
P
R
NG)
u
s
e
o
n
e
o
r
m
u
ltip
le
s
o
u
r
ce
o
f
in
p
u
t
i
n
g
en
er
atin
g
r
an
d
o
m
n
u
m
b
er
.
T
h
e
in
p
u
t
s
o
u
r
ce
is
ca
lled
s
ee
d
s
.
T
h
e
s
ee
d
s
its
el
f
m
u
s
t
b
e
r
an
d
o
m
an
d
u
n
p
r
ed
ictab
le
[
1
1
-
1
2
]
.
A
m
et
h
o
d
h
a
s
b
ee
n
p
r
o
p
o
s
ed
th
e
f
o
r
th
e
clie
n
ts
to
g
e
n
er
ate
I
P
v
6
ad
d
r
ess
in
ter
f
ac
e
id
e
n
ti
f
ie
r
s
th
r
o
u
g
h
h
as
h
i
n
g
th
e
I
P
v
6
p
r
ef
ix
ad
v
er
ti
s
ed
b
y
t
h
e
r
o
u
ter
ad
v
er
tis
e
m
e
n
t [
1
3
]
.
1
.
3
.
Cry
pto
g
ra
ph
ica
lly
G
ener
a
t
ed
Addres
s
(
C
G
A)
C
G
A
s
h
ad
d
ef
i
n
e
a
m
et
h
o
d
f
o
r
s
ec
u
r
el
y
ass
o
ciat
in
g
a
p
u
b
lic
k
e
y
to
an
I
P
v
6
a
d
d
r
ess
.
A
cr
y
p
to
g
r
ap
h
ic
h
as
h
o
f
t
h
e
p
u
b
lic
k
e
y
is
u
s
ed
as
an
in
ter
f
ac
e
id
en
ti
f
ier
o
f
th
e
I
P
v
6
ad
d
r
ess
,
w
h
ic
h
ca
n
later
b
e
v
er
if
ied
b
y
t
h
e
r
ec
ip
ien
t
o
f
t
h
e
p
ac
k
et
o
r
m
e
s
s
a
g
e.
Si
n
ce
C
GAs
tie
a
p
u
b
lic
k
e
y
to
an
I
P
v
6
ad
d
r
ess
,
ev
e
n
as
h
o
s
ts
s
w
itc
h
n
et
w
o
r
k
s
,
t
h
e
y
ar
e
u
n
iq
u
el
y
id
en
ti
f
iab
le
[
1
4
]
.
T
h
e
C
G
A
i
m
p
le
m
e
n
tatio
n
i
n
cr
e
ase
th
e
s
ec
u
r
it
y
o
f
I
P
v
6
an
d
p
r
o
d
u
ce
r
an
d
o
m
I
D
f
o
r
I
P
v
6
ad
d
r
ess
in
g
.
B
u
t
C
G
A
i
m
p
le
m
e
n
tatio
n
h
a
s
its
o
w
n
d
r
a
w
b
ac
k
.
T
h
e
co
s
t
o
f
r
u
n
n
i
n
g
C
G
A
al
g
o
r
ith
m
is
h
ig
h
[
1
5
]
.
I
t
u
s
es
h
ig
h
co
m
p
u
tatio
n
a
l
p
o
w
er
an
d
g
e
n
er
all
y
it
w
o
u
ld
g
e
n
er
ate
s
i
m
ilar
k
e
y
s
.
T
h
e
m
et
h
o
d
is
n
o
t su
itab
le
f
o
r
I
o
T
d
ev
ices
w
it
h
lo
w
co
m
p
u
t
u
tio
n
al
p
o
w
er
.
1
.
4
.
Secure
d Ne
ig
h
bo
r
Dis
co
v
er
y
(
SE
ND)
T
o
co
u
n
ter
th
e
p
o
s
s
ib
le
attac
k
ag
ai
n
s
t
N
DP
an
d
SLAA
C
,
Secu
r
ed
Neig
h
b
o
u
r
Dis
co
v
er
(
SEND
)
is
d
ev
elo
p
as
a
m
o
r
e
s
ec
u
r
ed
w
a
y
to
i
m
p
le
m
en
t
NDP
.
W
ith
SEND
it
p
r
o
v
id
e
ad
d
r
ess
o
w
n
er
s
h
i
p
p
r
o
o
f
m
ec
h
a
n
i
s
m
,
m
e
s
s
a
g
e
i
n
te
g
r
it
y
/id
en
t
it
y
an
d
a
u
t
h
o
r
izatio
n
o
f
r
o
u
ter
.
SEN
D
u
s
e
C
r
y
p
to
g
r
ap
h
icall
y
Ge
n
er
ated
A
d
d
r
ess
(
C
G
A
)
a
s
p
ar
t
o
f
it
c
o
m
p
o
n
en
t
in
g
e
n
er
ati
n
g
s
ec
u
r
ed
m
es
s
ag
e
an
d
id
e
n
tit
y
f
o
r
I
P
v
6
co
m
m
u
n
icatio
n
.
SEND
p
r
o
to
co
l
u
s
e
C
G
A
to
p
r
ev
en
t
ad
d
r
es
s
s
p
o
o
f
in
g
.
C
G
A
ca
n
au
t
h
e
n
ticate
I
P
v
6
ad
d
r
ess
w
it
h
o
u
t
in
s
tall
in
g
ad
d
itio
n
3
r
d
p
a
r
ty
s
o
f
t
w
ar
e
an
d
s
er
v
er
s
[
1
6
-
1
7
]
.
2.
RE
S
E
ARCH
M
E
T
H
O
D
T
h
e
p
u
r
p
o
s
e
o
f
t
h
i
s
s
tu
d
y
i
s
to
en
h
an
ce
r
an
d
o
m
ize
al
g
o
r
it
h
m
i
n
o
r
d
er
to
s
o
l
v
e
t
h
e
p
r
o
b
le
m
w
i
th
s
m
al
l
I
o
T
d
ev
ice
th
at
h
a
s
n
o
s
tab
le
s
to
r
ag
e
to
s
to
r
e
th
e
g
en
er
ated
r
an
d
o
m
I
P
v
6
ad
d
r
ess
n
u
m
b
er
.
T
h
e
alg
o
r
ith
m
s
to
g
e
n
er
ate
I
P
v
6
a
d
d
r
ess
w
er
e
d
ev
elo
p
ed
b
ased
o
n
s
p
ec
if
icatio
n
in
R
F
C
4
9
4
1
-
P
r
iv
ac
y
E
x
te
n
s
io
n
f
o
r
SLAA
C
[
3
]
an
d
al
g
o
r
ith
m
p
r
o
p
o
s
ed
b
y
[
1
4
]
.
T
h
e
d
ef
au
lt
r
an
d
o
m
en
g
i
n
e
u
s
ed
b
y
t
h
e
I
o
T
d
ev
ice
is
u
s
ed
to
g
en
er
ate
t
h
e
I
P
v
6
ad
d
r
e
s
s
.
T
h
is
s
tu
d
y
h
ad
ad
ap
ted
an
d
en
h
an
ce
d
t
h
r
ee
alg
o
r
ith
m
s
f
o
r
I
P
v
6
A
d
d
r
ess
g
en
er
at
io
n
as
f
o
llo
w
i
n
g
s
:
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
5
0
2
-
4752
I
n
d
o
n
esia
n
J
E
lec
E
n
g
&
C
o
m
p
Sci,
Vo
l
.
1
2
,
No
.
1
,
Octo
b
er
201
8
:
2
5
4
–
260
256
1.
R
F
C
4
9
4
1
-
P
r
iv
ac
y
E
x
ten
s
io
n
f
o
r
S
L
AAC[3
]
–
R
an
d
o
m
I
P
ad
d
r
ess
Gen
er
ate
u
s
in
g
r
a
n
d
o
m
e
n
g
in
e
co
m
e
w
it
h
o
p
er
atin
g
s
y
s
te
m
.
2.
I
m
p
r
o
v
e
m
e
n
t to
th
e
al
g
o
r
ith
m
1
ab
o
v
e
b
y
ap
p
l
y
in
g
MD
5
h
a
s
h
in
g
m
ec
h
a
n
i
s
m
to
th
e
r
an
d
o
m
I
P
v
6
ad
d
r
ess
.
3.
R
af
iee
-
Me
i
n
el
–
B
ased
o
n
t
h
e
alg
o
r
ith
m
r
ec
o
m
m
e
n
d
ed
b
y
R
af
iee
-
Me
i
n
el
w
it
h
ad
j
u
s
t
m
en
t
to
co
m
p
l
y
w
i
th
h
ar
d
w
ar
e
li
m
itatio
n
.
R
esear
c
h
er
s
[
4
]
,
[
1
5
,
]
h
av
e
r
ec
o
m
m
e
n
d
ed
i
m
p
r
o
v
e
m
e
n
t
i
n
th
e
i
m
p
le
m
en
ta
tio
n
o
f
C
r
y
p
to
g
r
ap
h
ica
ll
y
Ge
n
er
ated
A
d
d
r
ess
(
C
G
A
)
b
y
r
ed
u
ci
n
g
th
e
g
r
a
n
u
lar
it
y
o
f
s
ec
u
r
it
y
le
v
el
to
lo
w
er
th
e
co
s
t
o
f
co
m
p
u
tat
io
n
.
A
n
o
t
h
e
r
r
esear
ch
er
r
ec
o
m
m
en
d
s
a
s
o
lu
tio
n
i
n
g
e
n
er
ati
n
g
a
r
an
d
o
m
n
u
m
b
er
an
d
co
m
b
i
n
e
w
it
h
a
MD
5
h
a
s
h
i
n
g
m
ec
h
a
n
i
s
m
o
f
d
ev
ice
i
n
ter
f
ac
e
to
g
en
er
ate
a
n
e
w
r
an
d
o
m
I
P
v
6
ad
d
r
ess
[
1
8
]
.
2
.
1
.
Alg
o
rit
h
m
1
:
Ra
nd
o
m
I
P
v
6
a
dd
re
s
s
g
ener
a
t
io
n ba
s
ed
o
n
m
et
ho
d 2
RF
C4
9
4
1
-
P
riv
a
c
y
E
x
t
en
s
io
n o
f
SL
AAC.
T
h
e
alg
o
r
ith
m
1
is
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o
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ith
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s
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s
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f
R
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d
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m
n
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it
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P
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P
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a
d
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R
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2
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it h
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Net
w
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r
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.
4.
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p
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all
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as o
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tr
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s
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M
D5
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e
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tp
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t
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it
s
to
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t b
it I
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b
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th
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u
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h
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6
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.
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et
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9.
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RE
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I
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259
Fig
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at
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a
m
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P
v
6
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P
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F
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4
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1
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SLAA
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0
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Ju
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sm
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ter
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0
1
5
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8
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0
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]
Ja
ra
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A
.
J.,
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L
.
,
&
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k
a
rm
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h
e
In
tern
e
t
o
f
Ev
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ry
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in
g
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ro
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h
I
P
v
6
:
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n
A
n
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sis
o
f
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ll
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g
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ti
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n
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0
1
3
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)
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7
–
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1
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.
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]
IET
F
S
tan
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rd
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RF
C
4
9
4
1
,
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c
y
Ex
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s A
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P
v
6
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R
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2
0
0
7
[4
]
A
lS
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h
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.
,
Ra
f
ie
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H.,
M
e
in
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l
C
;
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IP
v
6
S
tate
les
s
A
d
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A
u
to
c
o
n
f
ig
u
ra
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:
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la
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in
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b
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tw
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b
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Co
mp
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ter
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,
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0
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3
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v
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l
7
7
4
3
.
S
p
rin
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r,
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0
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5
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6
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–
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M
a
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u
a
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1
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p
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ti
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g
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2
0
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5
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0
2
9
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0
3
2
[8
]
Da
n
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Blo
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tev
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.
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p
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p
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A
d
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te
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ti
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p
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to
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o
l
fo
r
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P
v
6
w
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s
s
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rk
s
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IEE
E
In
ter
n
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ti
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fer
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tro
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0
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5
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2
5
3
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ti
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d
j
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6
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ter
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rin
g
,
2
0
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5
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1
No
4
.
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0
]
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k
h
in
,
A
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,
S
o
to
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J.,
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c
h
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.
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0
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1
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u
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1
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Octo
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201
8
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5
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–
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60
[1
2
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M
o
h
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d
S
a
a
d
,
Ka
m
a
ru
larif
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b
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p
p
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ra
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n
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c
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v
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I
P
v
6
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ms
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n
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2
0
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;
v
o
l
3
6
,
No
1
[1
4
]
S
a
n
a
Qa
d
ir
;
M
o
h
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m
m
a
d
U
m
a
r
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id
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n
In
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ti
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n
o
f
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ra
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ted
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se
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P
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.
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ter
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0
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4
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300
-
3
0
3
[1
5
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Ra
f
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e
,
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&
M
e
in
e
l.
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P
riv
a
c
y
a
n
d
S
e
c
u
rit
y
in
IP
v
6
Ne
t
wo
rk
s :
Ch
a
ll
e
n
g
e
s
a
n
d
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o
ss
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le
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o
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ti
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s
"
.
6
t
h
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ter
n
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t
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l
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o
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e
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n
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e
c
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rity o
f
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n
fo
rm
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t
io
n
a
n
d
Ne
two
rk
s
,
T
u
rk
e
y
,
2
0
1
3
;
2
1
8
-
2
2
4
[1
6
]
Am
j
e
d
S
id
A
h
m
e
d
,
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silah
Ha
ss
a
n
,
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r
Ef
fe
n
d
y
Oth
m
a
n
.
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e
c
u
re
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ig
h
b
o
r
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o
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ry
(S
e
N
D):
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tt
a
c
k
s
a
n
d
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ll
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n
g
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s
"
,
6
th
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ter
n
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t
io
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l
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o
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fer
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n
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e
o
n
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lec
trica
l
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g
i
n
e
e
rin
g
a
n
d
In
f
o
rm
a
ti
c
s (
ICEE
I)
,
2
0
1
7
;
1
-
6
[1
7
]
S
u
m
a
th
i
P;
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a
ro
j
P
a
tel
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ra
b
h
a
k
a
r
a
n
.
“
S
e
c
u
re
Ne
ig
h
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o
r
Disc
o
v
e
r
y
(S
END)
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r
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t
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ll
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s
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n
d
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p
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s
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1
0
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h
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ter
n
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ti
o
n
a
l
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fer
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n
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telli
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n
t
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ste
ms
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n
d
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n
tro
l
(
IS
CO)
2
0
1
6
;
1
-
6
[1
8
]
S
u
p
riy
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n
to
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,
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sb
u
ll
a
h
E.
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a
d
h
u
m
M
.
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e
c
u
rit
y
M
e
c
h
a
n
ism
f
o
r
IP
v
6
S
tate
les
s
A
d
d
re
ss
A
u
to
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ra
ti
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n
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.
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ter
n
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t
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l
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fer
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u
to
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ti
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icr
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e
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tro
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m
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n
d
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fo
rm
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h
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l
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g
y
,
Ba
n
d
u
n
g
,
2
0
1
5
;
3
1
-
36.
[1
9
]
G
u
p
ta,
P
.
,
&
Ku
m
a
r,
S
.
(2
0
1
4
).
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A
Co
m
p
a
ra
ti
v
e
A
n
a
l
y
sis
o
f
S
H
A
a
n
d
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D5
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lg
o
rit
h
m
"
.
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Co
mp
u
ter
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c
ien
c
e
a
n
d
I
n
fo
rm
a
ti
o
n
T
e
c
h
n
o
l
o
g
ies
(
IJ
CS
IT
)
,
5
(3
),
4
4
9
2
–
4
4
9
5
.
[2
0
]
Jo
sé
Ca
m
p
o
s
;
Ru
i
A
b
re
u
;
G
o
rd
o
n
F
ra
se
r
;
M
a
rc
e
lo
d
'
Am
o
ri
m
,
"
E
n
tro
p
y
-
b
a
se
d
tes
t
g
e
n
e
ra
ti
o
n
f
o
r
im
p
ro
v
e
d
fa
u
lt
lo
c
a
li
z
a
ti
o
n
"
,
2
8
t
h
IEE
E
/A
CM
In
t
e
rn
a
ti
o
n
a
l
Co
n
fer
e
n
c
e
o
n
Au
t
o
ma
ted
S
o
ft
wa
re
E
n
g
in
e
e
rin
g
(
AS
E)
,
2
0
1
3
;
2
5
7
-
2
6
7
.
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