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RE: IPv6 support for com/net zones on October 19, 2004

  • From: Hannigan, Martin
  • Date: Wed Oct 27 16:29:16 2004



Thanks Joe, great post re the /48's, I was just about to. 
We're working on this.


-M<



--
Martin Hannigan                         (c) 617-388-2663
VeriSign, Inc.                          (w) 703-948-7018
Network Engineer IV                       Operations & Infrastructure
hannigan@verisign.com



> -----Original Message-----
> From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of
> Joe Abley
> Sent: Wednesday, October 27, 2004 4:02 PM
> To: Daniel Roesen
> Cc: nanog@merit.edu
> Subject: Re: IPv6 support for com/net zones on October 19, 2004
> 
> 
> 
> 
> On 27 Oct 2004, at 15:43, Daniel Roesen wrote:
> 
> >
> > On Wed, Oct 27, 2004 at 03:21:44PM -0400, Joe Abley wrote:
> >> Maybe Verisign needs more (reliable) v6 transit.
> >
> > Something is broken in several colors here. I'm seeing AS_PATHs
> > like 6830 6175 109 7018 26415 (Sprint, Cisco, AT&T, Verisign) but
> > a traceroute is going straight from 6830 to AT&T and dying there
> > with !P.
> >
> > That you have no route for A is most probably a filtering issue
> > somewhere... I'm seeing it being propagated by Sprint.
> 
> Since I mailed that, 3557 started receiving a covering /48 
> for A. Maybe 
> there's some operational/maintenance-induced stability issues 
> for those 
> paths.
> 
> We've had reports before of F's covering /48 (2001:500::/48) being 
> filtered by some people, based on the conviction that /48s 
> were always 
> bad and should never be accepted by anybody. It's possible 
> that this is 
> biting Verisign, too.
> 
> For the record, ARIN assign critical-infrastructure /48s which it is 
> important to accept:
> 
>    http://www.arin.net/registration/ipv6/micro_alloc.html
> 
> Gert Döring maintains an excellent summary of current good 
> practice for 
> v6 filtering (including cisco and JUNOS configuration examples, and 
> filters of various degrees of strictness) here:
> 
>    http://www.space.net/~gert/RIPE/ipv6-filters.html
> 
> Operators who are currently blocking any prefix covered by 2001::/16 
> which is longer than 32 bits are encouraged to review that page, and 
> fix their routers.
> 
> 
> Joe
> 




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