IPv6 Default Allocation - What size allocation are you giving out

Owen DeLong owen at delong.com
Thu Oct 9 20:01:06 UTC 2014


On Oct 9, 2014, at 11:34 AM, Baldur Norddahl <baldur.norddahl at gmail.com> wrote:

> On 9 October 2014 19:55, Richard Hicks <richard.hicks at gmail.com> wrote:
> 
>> The BCOP specfically addresses this in 4b:
>> " *b. Point-to-point links should be allocated a /64 and configured with a
>> /126 or /127*"
>> 
> 
> Why do people assign addresses to point-to-point links at all? You can just
> use a host /128 route to the loopback address of the peer. Saves you the
> hassle of coming up with new addresses for every link. Same trick works for
> IPv4 too.
> 
> Regards,
> 
> Baldur

<SARCASM>

And it makes your trace-routes across parallel links oh so easy to identify which of them is at fault for the packet loss, too.

</SARCASM>

There are a number of good technical reasons to want distinct addresses on point to point links.

Owen




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