Bug 598966 – bugs.gentoo.org not reachable via IPv6 from DTAG

• Status: RESOLVED FIXED
• Product: Gentoo Infrastructure

[Description Thomas Deutschmann (RETIRED) 2016-11-04 21:17:04 UTC]

bugs.gentoo.org isn't reachable via IPv6 from Germany's largest ISP (Deutsche Telekom AG aka DTAG).

I got the following technical reply from DTAG's NOC:

> Routing Status (2607:fcc0:4:ffff::4): multi-resource
> 
> At 2016-11-04 16:00:00 UTC, 2607:fcc0::/35 was 100% visible (by 149 of 149 RIS full peers).
> 
> First ever seen announced by AS36483, on 2016-04-12 00:00:00 UTC.
> 
> Originated by: AS36483 (valid route object in RADB)
> 
> No less-specific covering prefixes.
> 
> 
> Advanced Settings
> 
> Showing results for 2607:fcc0::/35 as of 2016-11-04 16:00:00 UTC
> IP address (2607:fcc0:4:ffff::4) has been converted to its encompassing routed prefix (2607:fcc0::/35)

DTAG gets the following networks advertised

> * 2607:fcc0:2000::/35     2003:0:130b:2b::2    0                  6939 13768 36483 I
>   2607:fcc0:4000::/35     2003:0:130b:2b::2    0                  6939 13768 36483 36483 36483 36483 36483 I
> * 2607:fcc0:6000::/35     2003:0:130b:2b::2    0                  6939 32244 I

The IP block 2607:fcc0:4: is missing.


See

> RP/0/7/CPU0:S-EB1#sh bgp ipv6 unicast 2607:fcc0::/35
> Fri Nov  4 20:00:01.701 UTC
> % Network not in table
> RP/0/7/CPU0:S-EB1#
> 
> RP/0/7/CPU0:S-EB1#sh route ipv6 2607:fcc0:4:ffff::4
> Fri Nov  4 19:59:00.540 UTC
> 
> % Network not in table
> 
> RP/0/7/CPU0:S-EB1#

Neither net 2607:fcc0::/35 nor net 2607:fcc0:4::/35 which would contain the current IPv6 of bugs.gentoo.org (2607:fcc0:4:ffff::4) are announced by any peer available for DTAG, yet.


This should be escalated to the ISP which is currently responsible for bugs.gentoo.org's IPv6 network.

[Comment 1 Robin Johnson 2016-11-04 22:26:26 UTC]

Feedback from the sponsor:
> Hi Robin,
> 
> I tested from 10 random nodes in Germany (unfortunately no access to
> dtag):
> 
> gossamerthreads@gossamerthreads01:~$ ./bin/ring-ping-status --country DE --count > 10 --nodes 10 2607:fcc0:4::1
> belwue01:               156.389 avg    10/10     0%    Stuttgart - AS553
> xing02:                 140.248 avg    10/10     0%    Frankfurt - AS50343
> xing01:                 150.741 avg    10/10     0%    Frankfurt - AS50343
> tumuenchen01:           180.714 avg    10/10     0%    Garching - AS56357
> spacenet01:             149.454 avg    10/10     0%    Munich - AS5539
> isarnet01:              176.470 avg    10/10     0%    Hallbergmoos - AS197164
> netsign01:              172.521 avg    10/10     0%    Berlin - AS31078
> iabg01:                 150.661 avg    10/10     0%    Taufkirchen - AS29259
> skyway01:               147.349 avg    10/10     0%    Sankt Ingbert - AS196763
> rrbone01:               175.384 avg    10/10     0%    Dusseldorf - AS39138
> gossamerthreads@gossamerthreads01:~$
> 
> and everything looks good here (10/10 means 10 pings sent, 10 replies,
> 0% packet loss, and avg response time is normal from vancouver to
> germany).
> 
> However, I do see the network not in table on their looking glass:
> 
> https://f-lga1.f.de.net.dtag.de/index.php?pageid=lg&query=ipv6+bgp&para=2607%3Afcc0%3A%3A%2F35&server=194.25.0.218&EXEC=Execute
> 
> but we aren't getting any other alerts, so I suspect this is specific to
dtag.
> 
> We'll see if we can reach out and get any update there.
> 
> Cheers,
> 
> Alex

[Comment 2 Robin Johnson 2016-11-08 17:38:14 UTC]

Reported as resolved in the email thread see subject "[GT #130264]"