Re: AS6939 (Hurricane Electric) packet loss on Helsinki/Piter-IX-bound path; Lagos, Nigeria origin

[email protected]


On Wed, Aug 12, 2026 at 10:33 AM Sina Owolabi via NANOG <
[email protected]> wrote:

> Apparently Ive not particpated at the list in a while.
>
> cordially yours,
>
> Sina Owolabi
>
>
> ---------- Forwarded message ---------
> From: Sina Owolabi <[email protected]>
> Date: Wed, Aug 12, 2026 at 3:30 PM
> Subject: AS6939 (Hurricane Electric) packet loss on Helsinki/Piter-IX-bound
> path; Lagos, Nigeria origin
> To: [email protected] list <[email protected]>, <[email protected]>, <
> [email protected]>
>
>
>
> Hi all,
>
> Sorry to bother you but we need some help
>
> We're seeing sustained, real packet loss inside Hurricane Electric's own
> network (AS6939) on a
> path from Lagos, Nigeria toward Helsinki.
> Loss starts at the first HE hop and persists all the way
> to the destination (a Hetzner Helsinki host we're trying to reach over a
> site-to-site IPsec
> tunnel). Confirmed via RDAP that the lossy hops are HE-registered space
> (org handle HURC), not
> just transiting through HE — this is on your own backbone, not further
> upstream.
>
> This is *not* a blanket HE issue from our vantage point: the same test
> toward RIPE NCC in
> Amsterdam, through the same HE hops (184.105.65.2 and neighbors), shows 0%
> loss.
>
> A test toward a Debian mirror (via Fastly) shows only minor loss (13-23%)
> on a couple of intermediate HE hops and
> 0% at the destination. So this looks specific to the segment continuing
> toward the Piter-IX
> Helsinki peering, not HE generally.
>
> mtr -n -r -i 1.5 -c 30 -s 300 run from our edge in Lagos (source
> 62.173.32.54) to a Hetzner
> Helsinki host (packet size/interval chosen to avoid ICMP rate-limit false
> positives):
>
>     HOST                          Loss%   Snt   Last   Avg  Best  Wrst
> StDev
>     62.173.32.49                   0.0%    30    0.4   0.7   0.4   4.1
>  0.9
>     62.173.34.225                  0.0%    30    0.5   0.6   0.4   2.5
>  0.4
>     41.184.211.32                  0.0%    30    0.9   1.3   0.7   5.0
>  1.0
>     41.184.56.17                   0.0%    30   93.3  92.0  91.3  98.9
>  1.5
>     62.173.35.222                  0.0%    30   91.5  91.7  91.3  94.6
>  0.7
>     184.105.65.2                   0.0%    30   99.3  98.7  98.3 102.6
>  0.8
>     184.104.192.133               26.7%    30  100.1 101.1  99.1 104.3
> 1.3   <- HE (AS6939)
>     184.104.188.218               36.7%    30  199.2 142.4 129.9 201.0
>  25.5   <- HE (AS6939)
>     184.104.198.57                36.7%    30  187.4 133.0 127.5 187.4
>  13.3   <- HE (AS6939)
>     184.104.198.147                0.0%    30  142.9 133.9 128.3 144.2
>  5.9
>     72.52.92.106                  63.3%    30  196.2 146.5 126.7 199.5
>  31.9   <- HE (AS6939)
>     193.27.37.131                 30.0%    30  202.8 139.7 129.1 202.8
>  24.9   <- Piter-IX Helsinki
>     213.239.224.26                33.3%    30  195.4 136.3 129.1 195.4
>  19.9   <- Hetzner
>     213.133.119.11                30.0%    30  196.9 140.4 129.1 199.1
>  24.3   <- Hetzner
>     [destination]                 40.0%    30  196.9 133.2 129.1 196.9
>  15.9   <- Hetzner (endpoint)
>
> Reproduced against a second, unrelated destination in the same Hetzner
> Helsinki range with the
> same result (same HE hops, same loss pattern). Reproducible over multiple
> runs across several
> hours.
>
> Would appreciate it if anyone from Hurricane Electric's NOC/engineering, or
> anyone who can point
> me to the right escalation path, could take a look at the segment from
> 184.104.192.133 onward
> toward the Piter-IX Helsinki peering. Happy to share full raw output, run
> tests at a specific time
> of your choosing, or provide a looking-glass-reachable source if that helps
> triage.
>
>
> Sina Owolabi
> _______________________________________________
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>
> https://lists.nanog.org/archives/list/[email protected]/message/XJO5G3K5QB4UTFHM3MHGXLFNYMHTHXWP/
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