Test your connectivity for World IPv6 Day

[Frank Bulk]

Weird -- at 6 am Central resolving AAAA for ipv6.juniper.net failed on my
DNS servers.  Querying the A and NS for juniper.net also resulted in a
SERVFAIL.  When I digged against Juniper's DNS servers directly  that
worked, so I flushed that juniper.net from the cache of all our DNS servers
and now it's fine.

Perhaps it was just us, but I write it here just in case anyone else saw
something similar.

Frank

-----Original Message-----
From: ipv6-ops-bounces+frnkblk=iname.com at lists.cluenet.de
[mailto:ipv6-ops-bounces+frnkblk=iname.com at lists.cluenet.de] On Behalf Of
Bill Owens
Sent: Sunday, June 05, 2011 5:01 PM
To: Jared Mauch
Cc: ipv6-ops at lists.cluenet.de
Subject: Re: Test your connectivity for World IPv6 Day

On Fri, Jun 03, 2011 at 07:53:24AM -0400, Jared Mauch wrote:
> On Thu, Jun 02, 2011 at 11:04:35AM +0200, Daniel Roesen wrote:
> > On Wed, Jun 01, 2011 at 09:53:55AM -0700, Seth Mattinen wrote:
> > > Both AfriNIC and ipv6.juniper.net are both working for me from work.
> > > 
> > > traceroute to ipv6.juniper.net (2620:103:c003::10), 30 hops max, 40
byte
> > > packets
> > 
> > The problem with ipv6.juniper.net is a PMTUD problem, not general
> > reachability problem...
> 
> 	I've not had luck reaching anyone there.  If someone from Juniper
> is here please send me a note in private.

Good luck with that. We discovered the PMTUD problem in February, told them
about it in March. . . and April. . . and it's still broken.

Anyway, if you have a FreeBSD or OS X box with non-tunneled IPv6
connectivity, you can do the tests yourself:
http://www.wand.net.nz/scamper/pmtud 

Bill.