/127 between routers?

[Mohacsi Janos]

Hi,

 	Have a look at RFC 3627:
http://tools.ietf.org/html/rfc3627
"Use of /127 Prefix Length Between Routers Considered Harmful"

Janos Mohacsi
Head of HBONE+ project
Network Engineer, Deputy Director of Network Planning and Projects
NIIF/HUNGARNET, HUNGARY
Key 70EF9882: DEC2 C685 1ED4 C95A 145F  4300 6F64 7B00 70EF 9882

On Tue, 5 Jan 2010, Xavier Beaudouin wrote:

> Hi there...
>
> I can't figure if there is any drawback to use a /64 and subnet it into
> /127 only for point to point connections between routers.
>
> Seems that OpenBSD doesn't forbid that, but I wanted to know if there is
> any drawback in this way of connection each routers in such way.
>
> When I was working on 2000 and have 6bone stuff and was pTLA, we cannot do
> that, now KAME stack on OpenBSD allow that.
>
> Any good practices in this domain ?
>
> Xavier
>
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