<s>
Free	O
Range	O
Routing	B-Protocol
or	O
FRRouting	B-Protocol
or	O
FRR	O
is	O
a	O
network	B-Protocol
routing	I-Protocol
software	B-Application
suite	I-Application
running	O
on	O
Unix-like	B-Operating_System
platforms	O
,	O
particularly	O
Linux	B-Application
,	O
Solaris	B-Application
,	O
OpenBSD	B-Operating_System
,	O
FreeBSD	B-Operating_System
and	O
NetBSD	B-Device
.	O
</s>
<s>
It	O
was	O
created	O
as	O
a	O
fork	B-Application
from	O
Quagga	B-Protocol
.	O
</s>
<s>
FRRouting	B-Protocol
is	O
distributed	O
under	O
the	O
terms	O
of	O
the	O
GNU	O
General	O
Public	O
License	O
v2	O
(	O
GPL2	O
)	O
.	O
</s>
<s>
FRRouting	B-Protocol
broke	O
away	O
from	O
the	O
free	O
routing	B-Protocol
software	O
Quagga	B-Protocol
.	O
</s>
<s>
Several	O
Quagga	B-Protocol
contributors	O
,	O
including	O
Cumulus	O
Networks	O
,	O
6WIND	O
,	O
and	O
BigSwitch	O
Networks	O
,	O
citing	O
frustration	O
about	O
the	O
pace	O
of	O
development	O
,	O
decided	O
to	O
fork	B-Application
the	O
software	O
and	O
form	O
their	O
own	O
community	O
.	O
</s>
