> Including observing the discussion here and other places I see the google problem discussed elsewhere too, perhaps the same problem as -
----- Begin Included Message ----- From outages-boun...@outages.org Sat Nov 8 21:03:08 2014 Date: Sat, 8 Nov 2014 13:02:50 -0800 To: Mark Kamichoff <p...@prolixium.com> Cc: outa...@outages.org, Joe Hamelin <j...@nethead.com> Subject: Re: [outages] fonts.gstatic.com IPv6 issues... From: "Aaron C. de Bruyn via Outages" <outa...@outages.org> Reply-To: "Aaron C. de Bruyn" <aa...@heyaaron.com> Sender: "Outages" <outages-boun...@outages.org> Nice work Mark! It only started for me about a week ago. I've had my HE tunnel for years. I wonder if they just enabled IPv6 service to that particular web property, or if they made a recent config change. Anyways, I wonder if someone from Google reads the outages list, or if NANOG should be CC'd to get their attention. On Sat, Nov 8, 2014 at 11:26 AM, Mark Kamichoff via Outages < outa...@outages.org> wrote: > On Sat, Nov 08, 2014 at 08:07:56AM -0500, Stephen Frost via Outages wrote: > > I've been having issues w/ google IPv6 (more-or-less all services > > operating over 80/443 have been really bad, though imap/993 has had > > issues also) for at least 18 hours from a SixXS tunnel which terminates > > in Ashburn. > > "me too" (I'm in Seattle, USA) > > I've narrowed down this issue to Google ignoring ICMPv6 PTBs. It > sometimes works sporadically for me, though. Here's an example w/some > tcpdumps: > > http://www.prolixium.com/share/txt/google-ipv6-pmtud-fail.txt > > Relevant lines are the following: > > 13:51:34.046171 IP6 2001:48c8:1:2::2 > 2607:f8b0:4005:802::1006: ICMP6, > packet too big, mtu 1280, length 1240 > 13:51:34.562579 IP6 2607:f8b0:4005:802::1006.443 > > 2001:48c8:1:105:21c:c0ff:feb2:8dbd.33936: Flags [.], seq 1:1429, ack > 279, win 232, options [nop,nop,TS val 3392471676 ecr 756572814], length > 1428 > > Google never lowers the packet length and so the connection times out. > As others have mentioned, this only really affects tunneled users. > > I've seen other organizations break this over the years but I never > thought Google would make the list.. > > - Mark > > -- > Mark Kamichoff > p...@prolixium.com > http://www.prolixium.com/ > > _______________________________________________ > Outages mailing list > outa...@outages.org > https://puck.nether.net/mailman/listinfo/outages > > ----- End Included Message -----