[AusNOG] another ipv6 Q

[Alex Samad - Yieldbroker]

So Mitchell hit it


The RFC prohibits this. If you already have a /24, I don't think it will cost you any more in APNIC fees to add a /48.
   6to4 prefixes more specific than 2002::/16 must not be propagated in
   native IPv6 routing, to prevent pollution of the IPv6 routing table
   by elements of the IPv4 routing table.  Therefore, a 6to4 site which
   also has a native IPv6 connection MUST NOT advertise its 2002::/48
   routing prefix on that connection, and all native IPv6 network
   operators MUST filter out and discard any 2002:: routing prefix
   advertisements longer than /16.


A

> -----Original Message-----
> From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of
> Matt Palmer
> Sent: Thursday, 3 July 2014 10:46 AM
> To: ausnog at lists.ausnog.net
> Subject: Re: [AusNOG] another ipv6 Q
> 
> On Thu, Jul 03, 2014 at 12:30:07AM +0000, Alex Samad - Yieldbroker wrote:
> > > because it's horribly supported and has no way to perform deterministic
> routing because it's based on an anycast address.

So are you saying I have to have the ipv4 address available for ipv6 to ipv6 traffic ?

I thought   ( and I could be wrong), but the ipv4 is only used to generate the traffic and to help with 6ot4 traffic but 
For example if I want to get from my ipv6 (6to4 ) address to a 2001:: address do I have to go via a 6to4 if I have a route for 2001:: via a ipv6 address from my upstream will it not just use that 

> > > To a traceroute to 192.88.99.1
> >
> > But the use of 192.88.99.1 is only for translating 6 to 4.  For all
> > ipv6 traffic would it not route straight to me, presuming I advertised
> > my /48 to my upstream.
> 
> An interesting idea.  You'll probably run into problems with your upstream
> accepting that route, and even if you don't, tying your v6 address range to

So this would be a procedural thing not a technical thing, I can accept that.


> your v4 assignment is likely to end in sadness.  RIR rules all allow you to get a
> v6 assignment of an equivalent size to your v4 assignment without paying
> any extra (and on the same rules), so my recommendation would just be to
> get a v6 assignment and route that, instead of trying to mangle your 6to4
> range to do something it really wasn't built for.

Yes... starting the process


> 
> - Matt
> 
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