sysupgrade.openwrt.org IPv6 appears dead
Goetz Goerisch
ggoerisch at gmail.com
Fri Jun 28 07:03:19 PDT 2024
Hi all,
I did a measurement from RIPE Atlas anchors to
asu-01.infra.openwrt.org, as sysupgrade.openwrt.org CNAME resolution
fails sometimes:
https://atlas.ripe.net/measurements/74524089/overview
TL;DR not reachable from certain parts of the earth.
>From my traceroute, the digital ocean infrastructure does not respond
to ICMPv6 requests, which violates RFC4890.
Additionally the routing is asymmetric
tracepath sysupgrade.openwrt.org
1?: [LOCALHOST] 0.016ms pmtu 1500
1: 2a02:908:xxx:xxx::1 0.767ms
1: 2a02:908:xxx:xxx::1 0.779ms
2: 2a02:908:xxx:xxxx:xxxx:xxxx:xxxx:xxx1 1.407ms
3: 2a02:908:xxx:5::1 12.764ms
4: 7113a-mx960-01-ae10-1050.dar.unity-media.net 50.140ms
5: 7113a-mx960-02.dar.unity-media.net 12.959ms asymm 6
6: de-fra04d-rc1-lo0-0.v6.aorta.net 13.427ms
7: telia-gw.fnt.cw.net 11.006ms
8: ffm-bb2-v6.ip.twelve99.net 11.865ms asymm 10
9: digitalocean-ic-378009.ip.twelve99-cust.net 12.228ms asymm 8
10: 2a03:b0c0:fffe::68 9.688ms asymm 9
11: 2a03:b0c0:fffe::70 11.626ms asymm 9
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: asu-01.infra.openwrt.org 12.240ms reached
Resume: pmtu 1500 hops 17 back 14
mtr sysupgrade.openwrt.org -z -6 -w
Start: 2024-06-28T16:01:34+0200
HOST: Loss% Snt
Last Avg Best Wrst StDev
1. AS3209 2a02:908:xxx:xxx::1 0.0% 10
0.6 0.6 0.6 0.7 0.0
2. AS3209 2a02:908:xxx:xxxx:xxxx:xxxx:xxxx:xxx1 0.0% 10
1.3 1.4 1.0 2.0 0.4
3. AS3209 2a02:908:xxx:5::1 0.0% 10
9.0 13.4 8.9 24.8 5.3
4. AS3209 7113a-mx960-01-ae10-1050.dar.unity-media.net 0.0%
10 11.3 11.4 9.1 16.7 2.5
5. AS3209 7113a-mx960-02.dar.unity-media.net 0.0%
10 9.5 12.3 8.4 22.2 4.2
6. AS6830 de-fra04d-rc1-lo0-0.v6.aorta.net 0.0%
10 11.9 14.9 8.9 34.9 7.6
7. AS1273 ae34-pcr1.fnt.cw.net 0.0%
10 8.3 15.1 8.3 42.3 10.6
8. AS??? ??? 100.0
10 0.0 0.0 0.0 0.0 0.0
9. AS1299 ffm-bb2-v6.ip.twelve99.net 0.0%
10 15.0 11.9 8.3 17.4 3.0
10. AS??? ??? 100.0
10 0.0 0.0 0.0 0.0 0.0
11. AS1299 digitalocean-ic-378009.ip.twelve99-cust.net 0.0%
10 11.6 12.0 8.5 17.8 3.5
12. AS??? ??? 100.0
10 0.0 0.0 0.0 0.0 0.0
13. AS??? ??? 100.0
10 0.0 0.0 0.0 0.0 0.0
14. AS??? ??? 100.0
10 0.0 0.0 0.0 0.0 0.0
15. AS??? ??? 100.0
10 0.0 0.0 0.0 0.0 0.0
16. AS??? ??? 100.0
10 0.0 0.0 0.0 0.0 0.0
17. AS??? ??? 100.0
10 0.0 0.0 0.0 0.0 0.0
18. AS14061 asu-01.infra.openwrt.org 0.0%
10 10.1 11.5 7.8 17.9 3.4
goetz
Am Do., 27. Juni 2024 um 02:32 Uhr schrieb Eric via openwrt-devel
<openwrt-devel at lists.openwrt.org>:
>
> The sender domain has a DMARC Reject/Quarantine policy which disallows
> sending mailing list messages using the original "From" header.
>
> To mitigate this problem, the original message has been wrapped
> automatically by the mailing list software.
>
>
> ---------- Forwarded message ----------
> From: Eric <evil.function at proton.me>
> To: Daniel Golle <daniel at makrotopia.org>
> Cc: noc at digitalocean.com, openwrt-devel <openwrt-devel at lists.openwrt.org>
> Bcc:
> Date: Thu, 27 Jun 2024 00:31:07 +0000
> Subject: Re: sysupgrade.openwrt.org IPv6 appears dead
> On Wednesday, June 26th, 2024 at 17:02, Daniel Golle <daniel at makrotopia.org> wrote:
>
> > Hi Eric,
> > Hi Digitalocean operators,
> >
> > On Wed, Jun 26, 2024 at 10:54:36PM +0000, Eric via openwrt-devel wrote:
> >
> > > [...]
> > > 11: digitalocean-ic-378007.ip.twelve99-cust.net 162.834ms
> > > 12: 2a03:b0c0:fffe::92 151.227ms
> > > 13: no reply
> > > ... all no reply
> > > 30: no reply
> > > Too many hops: pmtu 1500
> > > Resume: pmtu 1500
> > >
> > > I seem to recall that twelve99 has a less than stellar reputation for this sort of issue...
> > >
> > > How would one report such a problem? Or do we just wait for the routing tables to get updated?
> >
> >
> > inet6num: 2a03:b0c0::/32
> > netname: US-DIGITALOCEANLLC-20121228
> > country: NL
> >
> > Something seems wrong with the route from twelve99 to our host at digitalocean,
> > as hop 12 is within DO network and our sysupgrade.openwrt.org box is hosted
> > with DO.
> >
> > Maybe Paul or someone with direct contact to DO can create a ticket there, I'm
> > not sure if sending an email to the noc@ address is enough.
> >
> >
> > Cheers
> >
> >
> > Daniel
>
> Appears to be working again:
>
> $ tracepath -6 2a03:b0c0:3:d0::1574:1
> ...
> 8: nyk-bb1-v6.ip.twelve99.net 89.371ms
> 9: ldn-bb2-v6.ip.twelve99.net 150.534ms asymm 11
> 10: slou-b2-v6.ip.twelve99.net 149.089ms
> 11: digitalocean-ic-378006.ip.twelve99-cust.net 151.966ms
> 12: 2a03:b0c0:fffe::92 148.894ms
> 13: no reply
> 14: no reply
> 15: no reply
> 16: no reply
> 17: asu-01.infra.openwrt.org 170.037ms reached
> Resume: pmtu 1500 hops 17 back 17
>
> Thanks everyone,
> Eric
>
>
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