Waste will kill ipv6 too

Owen DeLong owen at delong.com
Thu Dec 28 17:39:54 CST 2017


> On Dec 28, 2017, at 09:23 , Octavio Alvarez <octalnanog at alvarezp.org> wrote:
> 
> On 12/20/2017 12:23 PM, Mike wrote:
>> On 12/17/2017 08:31 PM, Eric Kuhnke wrote:
>> Call this the 'shavings', in IPv4 for example, when you assign a P2P
>> link with a /30, you are using 2 and wasting 2 addresses. But in IPv6,
>> due to ping-pong and just so many technical manuals and other advices,
>> you are told to "just use a /64' for your point to points.
> 
> Isn't it a /127 nowadays, per RFC 6547 and RFC 6164? I guess the
> exception would be if a router does not support it.
> 
> Best regards,
> Octavio.

Best practice used most places is to assign a /64 and put a /127 on the interfaces.

Owen




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