<s>
The	O
Routing	B-Protocol
Policy	I-Protocol
Specification	I-Protocol
Language	I-Protocol
(	O
RPSL	B-Protocol
)	O
is	O
a	O
language	O
commonly	O
used	O
by	O
Internet	O
Service	O
Providers	O
to	O
describe	O
their	O
routing	O
policies	O
.	O
</s>
<s>
The	O
routing	O
policies	O
are	O
stored	O
at	O
various	O
whois	B-Protocol
databases	I-Protocol
including	O
RIPE	O
,	O
RADB	O
and	O
APNIC	O
.	O
</s>
<s>
describes	O
RPSL	B-Protocol
,	O
and	O
replaced	O
RIPE-181	O
.	O
</s>
<s>
provides	O
a	O
reference	O
tutorial	O
to	O
using	O
RPSL	B-Protocol
in	O
practice	O
to	O
support	O
IPv6	B-Protocol
routing	O
policies	O
.	O
</s>
