[AusNOG] another ipv6 Q

Gaurab Raj Upadhaya gaurab at lahai.com
Fri Jul 4 11:58:06 EST 2014


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On 7/4/14, 2:18 AM, Mark Newton wrote:
> 
> On Jul 3, 2014, at 7:06 PM, Gaurab Raj Upadhaya <gaurab at lahai.com> 
> wrote:
> 
>> I actually leaked a /64, /56, /48 etc. for a while to look what i
>>  could get through. In most cases, it'll work, but there are
>> plenty of networks it'll fail from, specially coming from
>> Europe.
> 
> 
> Given that RIRs allocate /48’s to their members, networks
> filtering on prefixes longer than /48 are essentially choosing to
> not have reachability to parts of the internet.

I specifically said 'RIR Boundary' filters.

AS someone noted earlier in the thread, RIRs have published
information as to which blocks are what. They allocate the /48s from
separate blocks compared to the /32s.

RIRs also allocate critical infrastructure /48s to root servers,
ccTLDs etc. but these are from a separate block.

And there are those that go with a default /32 filters. I do feel
sorry for them, as they limit their v6 reach-ability to pretty much
all the root servers.

- -gaurab

- -- 

http://www.gaurab.org.np/


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