Routing problems to www.eurovision.tv 2400:CB00::/32 CLOUDFLARE

[Tom Paseka]

Hello Chris,

CloudFlare operates a discontiguous network and we are unable to announce
the /32.

The /48 is a valid announcement for the global table. While we understand
there are some concerns about de-aggergation, aggregation is not possible
and we would either be announcing the deaggregated address space from a
single assignment, or we'd have multiple assignments for the same purpose,
so the impact on the routing table would be the same.

If the full table can not be accepted, I would recommend installing a
default route to one or all of your upstreams, otherwise many parts of the
global table will not be reachable, not just to CloudFlare.

Thanks,
Tom

On Fri, Jun 15, 2012 at 8:57 AM, Chris Welti <chris.welti at switch.ch> wrote:

> This could be because there is no covering 2400:CB00::/32 route by
> Cloudflare in the global IPv6 routing table.
> There is only 2400:CB00:2048::/48 and this might be filtered by ISPs due
> to the APNIC miniumum allocation size of /32 for 2400::/12.
> Cloudflare must announce at least the covering /32 for it to be globally
> reachable.
>
> Regards,
>
> Chris
> AS559
>
> Am 6/15/12 4:08 PM, schrieb Thomas Schäfer:
> > The (web) access to
> >
> > www.eurovision.tv
> >
> > has some problems:
> >
> > from LRZ/DFN                           ok
> > from Sixxs-Tunnel                      failed
> > via  http://ipv6-test.com/validate.php ok
> > via  sixy.ch (adding failed)           failed
> >
> >
> > traceroute from sixxs
> >
> >
> >
> > traceroute www.eurovision.tv
> > traceroute to www.eurovision.tv (2400:cb00:2048:1::6ca2:c904), 30 hops
> max, 40 byte packets using UDP
> >  1  fritz.box (2001:6f8:120c:0:21c:4aff:fe28:8a31)  0.664 ms   0.489 ms
>   0.504 ms
> >  2  gw-892.ham-01.de.sixxs.net (2001:6f8:900:37b::1)  39.374 ms 38.900
> ms   38.261 ms
> >  3  2001:6f8:862:1::c2e9:c729 (2001:6f8:862:1::c2e9:c729)  38.653 ms
> 37.531 ms   36.400 ms
> >  4  vl2280.cr10.noham.de.easynet.net (2001:6f8:862:1::c2e9:c72c) 44.705
> ms   43.567 ms   42.446 ms
> >  5  2001:6f8:1:0:87:86:69:214 (2001:6f8:1:0:87:86:69:214) 41.202 ms * *
> >  6  2001:6f8:1:0:87:86:77:83 (2001:6f8:1:0:87:86:77:83)  37.765 ms * *
> >  7  2001:6f8:1:0:87:86:77:62 (2001:6f8:1:0:87:86:77:62)  51.138 ms * *
> >  8  2001:6f8:1:0:87:86:77:71 (2001:6f8:1:0:87:86:77:71)  44.403 ms * *
> >  9  2001:6f8:1:0:87:86:77:15 (2001:6f8:1:0:87:86:77:15)  53.309 ms * *
> > 10  2001:6f8:1:0:87:86:77:47 (2001:6f8:1:0:87:86:77:47)  58.516 ms * *
> > 11  2001:7f8:1::a501:3335:1 (2001:7f8:1::a501:3335:1)(H!)  2100.484 ms *
> *
> >
> >
> > LANG=C wget -6 www.eurovision.tv
> > asking libproxy about url 'http://www.eurovision.tv/'
> > libproxy suggest to use 'direct://'
> > --2012-06-15 16:07:55--  http://www.eurovision.tv/
> > Resolving www.eurovision.tv... 2400:cb00:2048:1::6ca2:cb04,
> 2400:cb00:2048:1::6ca2:cc04, 2400:cb00:2048:1::6ca2:cd04, ...
> > Connecting to www.eurovision.tv|2400:cb00:2048:1::6ca2:cb04|:80...
> failed: No route to host.
> > Connecting to www.eurovision.tv|2400:cb00:2048:1::6ca2:cc04|:80...
> failed: No route to host.
> > Connecting to www.eurovision.tv|2400:cb00:2048:1::6ca2:cd04|:80...
> failed: No route to host.
> > Connecting to www.eurovision.tv|2400:cb00:2048:1::6ca2:ca04|:80...
> failed: No route to host.
> > Connecting to www.eurovision.tv|2400:cb00:2048:1::6ca2:c904|:80...
> failed: No route to host.
> >
> >
> >
> >
> >
> >
> > Regards,
> >
> > Thomas Schäfer
> >
> >
> >
>
>
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