The good news is that I reported this particular site as a problem two and three years ago, both, and it isn't any worse.
Matthew Kaufman On Wed, Nov 16, 2016 at 6:29 PM Mark Andrews <ma...@isc.org> wrote: > > In message <cc8936b2-1396-4375-85aa-a0247fd78...@consulintel.es>, JORDI > PALET M > ARTINEZ writes: > > I think it is not just a matter of testing behind a 1280 MTU, but about > makin > > g sure that PMTUD is not broken, so it just works in any circumstances. > > > > Regards, > > Jordi > > If you don't do MSS fix up a 1280 link in the middle will find PMTUD issues > provided the testing host has a MTU > 1280. > > Mark > > > -----Mensaje original----- > > De: NANOG <nanog-boun...@nanog.org> en nombre de Mark Andrews < > ma...@isc.org> > > Responder a: <ma...@isc.org> > > Fecha: jueves, 17 de noviembre de 2016, 9:26 > > Para: Lee <ler...@gmail.com> > > CC: <nanog@nanog.org> > > Asunto: Re: pay.gov and IPv6 > > > > > > In message > <cad8gwsvetsmn1ssfk_adttkheog0e1zfxrld11fpkbpjghm...@mail.gmai > > l.com> > > , Lee writes: > > > On 11/16/16, Mark Andrews <ma...@isc.org> wrote: > > > > > > > > In message <1479249003.3937.6.ca...@ns.five-ten-sg.com>, Carl > Byingto > > n > > > > writes > > > > : > > > >> -----BEGIN PGP SIGNED MESSAGE----- > > > >> Hash: SHA512 > > > >> > > > >> Following up on a two year old thread, one of my clients just > hit th > > is > > > >> problem. The failure is not that www.pay.gov is not reachable > over i > > pv6 > > > >> (2605:3100:fffd:100::15). They accept (TCP handshake) the port > 443 > > > >> connection, but the connection then hangs waiting for the TLS > handsh > > ake. > > > >> > > > >> openssl s_client -connect www.pay.gov:443 > > > >> > > > >> openssl s_client -servername www.pay.gov -connect > 199.169.192.21:443 > > > >> > > > >> Browsers (at least firefox) see that as a very slow site, and > it doe > > s > > > >> not trigger their happy eyeballs fast failover to ipv4. > > > > > > > > Happy eyeballs is about making the connection not whether TCP > > > > connections work after the initial packet exchange. > > > > > > > > I would send a physical letter to the relevent Inspector General > > > > requesting that they ensure all web sites under their > juristiction > > > > that are supposed to be reachable from the public net get audited > > > > regularly to ensure that IPv6 connections work from public IP > space. > > > > > > That will absolutely work. > > > > > > NIST is still monitoring ipv6 .gov sites > > > https://usgv6-deploymon.antd.nist.gov/cgi-bin/generate-gov > > > > Which show green which means that the tests they are doing are not > > sufficient. They need to test from behind a 1280 mtu link. > > > > The DNSSEC testing is also insufficient. 9-11commission.gov shows > > green for example but if you use DNS COOKIES (which BIND 9.10.4 and > > BIND 9.11.0 do) then servers barf and return BADVERS and validation > > fails. QWEST you have been informed of this already. > > > > Why the hell should validating resolver have to work around the > > crap you guys are using? DO YOUR JOBS which is to use RFC COMPLIANT > > servers. You get PAID to do DNS because people think you are > > compentent to do the job. Evidence shows otherwise. > > > > https://ednscomp.isc.org/compliance/gov-full-report.html show the > broken > > servers for .gov. It isn't hard to check. > > > > > so the IG isn't going to do anything there & pay.gov has a > contact us p > > age > > > https://pay.gov/public/home/contact > > > that I'd bet works much better than a letter to the IG > > > > You have to be able to get to https://pay.gov/public/home/contact > to use > > it. Most people don't have the skill set to force the use of IPv4. > > > > If it is production it should work. It is the I-G's role to ensure > this > > happens. Butts need to kicked. > > > > Mark > > > > > Regards, > > > Lee > > -- > > Mark Andrews, ISC > > 1 Seymour St., Dundas Valley, NSW 2117, Australia > > PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org > > > > > > > > > > > > ********************************************** > > IPv4 is over > > Are you ready for the new Internet ? > > http://www.consulintel.es > > The IPv6 Company > > > > This electronic message contains information which may be privileged or > confi > > dential. The information is intended to be for the use of the > individual(s) n > > amed above. If you are not the intended recipient be aware that any > disclosur > > e, copying, distribution or use of the contents of this information, > includin > > g attached files, is prohibited. > > > > > > > -- > Mark Andrews, ISC > 1 Seymour St., Dundas Valley, NSW 2117, Australia > PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org >
