Re: pay.gov and IPv6

[Mark Andrews <marka () isc org>]

In message <CAFG21ohZ6MV6Tef_sWuwV6kmAZmHQ3nFRLq-FkdU38g=vL3nnQ () mail gmail com>
, Todd Lyons writes:
> On Sat, Oct 25, 2014 at 10:26 AM, Matthew Kaufman <matthew () matthew at> wrote:
> > > Random IPv6 complaint of the day: redirects from FCC.gov to pay.gov fail
> > > when clients have IPv6 enabled. Work fine if IPv6 is off. One more set of
> > Still broken, 7 months later. And again, I was too busy trying to pay to tr
> y
> > to pull a full set of logs. But if you do something on the FCC site that
> > requires payment, the redirection flow dies halfway through if you're comin
> g
> > from IPv6 and works fine if you turn it off... so yet another computer in
> > the house has IPv6 disabled until manually turned back on.
>
> FWIW, eftps.gov is also unreachable via ipv6. I tried all of miredo,
> and my home Sixxs tunnel, and a HE tunnel from somewhere else.  I used
> the 4or6 plugin to temporarily disable ipv6 and both sites loaded
> straight away.

If a site is unreachable your client should switch to IPv4 unless
a IPv6 literal has been used.

If your client take ages to switch over report a bug to the client
vendor.

It should not take ages to switch between multiple server addresses.
IPv4 + IPv6 is just a example of multiple server addresses.

> eftps.gov and pay.gov appear to be managed separately since both their
> ipv4 and ipv6 netblocks are not in the same netblocks, and my path to
> them is not the same:
>
> eftps.gov has IPv6 address 2620:10f:400e:a::13
> mtr to eftps.gov via Sixxs:
>  Host                                          Loss%   Snt   Last
> Avg  Best  Wrst StDev
>  1. 2604:8800:100:82bc:ddcb:ae62:e3da:c91f      0.0%    16    0.9
> 0.9   0.9   1.6   0.2
>  2. gw-701.chi-03.us.sixxs.net                  0.0%    16   71.6
> 72.4  68.6  78.3   2.4
>  3. uschi03.sixxs.net                           0.0%    16   70.2
> 71.8  69.2  78.8   2.4
>  4. 2620:0:6b0:a::1                             0.0%    15   67.3
> 73.3  67.3  79.7   3.2
>  5. tge3-1.fr3.ord4.ipv6.llnw.net               0.0%    15   73.6
> 75.4  70.1  85.4   4.9
>  6. ve8.fr3.ord.ipv6.llnw.net                   0.0%    15   73.5
> 79.7  72.9  90.4   5.7
>  7. 2600:805:41f::5                             0.0%    15  104.4
> 81.9  74.2 104.4   9.0
>  8. 2600:806::12                                0.0%    15  105.2
> 104.0 100.6 109.8   2.9
>  9. 2600:806:12f::2e                            0.0%    15  134.5
> 135.7 131.4 147.4   4.1
> 10. 2620:10f:400e:1::4004                       0.0%    15  161.5
> 145.9 131.5 163.8   9.9
> 11. ???
>
> pay.gov has IPv6 address 2605:3100:fffd:100::15
> mtr to pay.gov via Sixxs:
>  Host                                          Loss%   Snt   Last
> Avg  Best  Wrst StDev
>  1. 2604:8800:100:82bc:ddcb:ae62:e3da:c91f      0.0%    11    0.9
> 0.9   0.7   1.1   0.1
>  2. gw-701.chi-03.us.sixxs.net                  0.0%    11   70.8
> 70.9  67.0  74.4   2.2
>  3. uschi03.sixxs.net                           0.0%    11   73.7
> 73.7  69.8  90.1   5.6
>  4. 2620:0:6b0:a::1                             0.0%    11   70.6
> 73.7  70.4  86.2   5.0
>  5. tge3-1.fr3.ord4.ipv6.llnw.net               0.0%    11   72.4
> 75.6  71.5  82.6   3.2
>  6. ve8.fr3.ord.ipv6.llnw.net                   0.0%    11   76.1
> 79.3  74.7  87.9   4.0
>  7. tge32-3.fr3.dal.ipv6.llnw.net               0.0%    11   99.1
> 100.1  96.4 106.2   2.7
>  8. sl-st30-dal-te0-14-0-1.v6.sprintlink.net    0.0%    11   98.2
> 102.0  98.2 111.0   4.4
>  9. sl-crs1-fw-be40.v6.sprintlink.net           0.0%    11   99.5
> 100.5  96.2 105.5   2.5
> 10. sl-gw38-fw-po0-0.v6.sprintlink.net          0.0%    11   96.4
> 98.8  96.4 105.1   2.6
> 11. 2600:4:2000:4::9                            0.0%    11  100.2
> 102.0  99.0 107.0   2.7
> 12. ???
>
> I was hoping an eftps.gov or pay.gov employee was casting an eye this
> way, but it doesn't look like anybody from there is subscribed to
> NANOG.
>
> ...Todd
> -- 
> The total budget at all receivers for solving senders' problems is $0.
> If you want them to accept your mail and manage it the way you want,
> send it the way the spec says to. --John Levine
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka () isc org