20.05.2026 06:00
 -------- Nachricht --------
Betreff: [HE#7078042] Flapping peers between HE.net/AS6939 and ***
Datum: Mon, 18 May 2026 03:10:08 -0700
Von: Dakota Cole (Hurricane Electric Internet Services) <peering@he.net>
An: maximilian@baehring.at

Hello ***,

This is Hurricane Electric AS6939. We have a peering session with your network that is flapping at this time. Please investigate the sessions listed below. We currently recommend using the following limits:

IPv4: 188,000
IPv6: 240,000

KleyReX: Exchange
***
AS6939: 2001:7f8:33::a100:6939:1
Last Event: 19 minutes (UP)
Last Error: Hold Timer Expired

-------- Nachricht --------
Betreff: Re: Fwd: [HE#7078042] Flapping peers between HE.net/AS6939 and ***
Datum: Tue, 19 May 2026 11:24:30 +0200
Von: Maximilian Baehring <maximilian@baehring.at>
An: Dakota Cole (Hurricane Electric Internet Services) <peering@he.net>
Kopie (CC): maximilian.baehring@googlemail.com

Hello

the only thing I do see on my side is session that reconnected about 9 hors ago. IPv4 is also working!

# ping -nc 1 -I *** tserv1.fra1.he.net
PING tserv1.fra1.he.net (216.66.80.30) from *** : 56(84) bytes of data.
64 bytes from 216.66.80.30: icmp_seq=1 ttl=60 time=4.47 ms

--- tserv1.fra1.he.net ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 4.478/4.478/4.478/0.000 ms

From my side I recommend to close the ticket. Possibly the reason for the interruption was a inetrruption somewehre on the as34927 (IFOG) hardware/routing, U do use rented capacity over there.

Max


Am 19.05.2026 um 11:12 schrieb Maximilian Baehring:
> ---------- Forwarded message ---------
> Von: Maximilian Baehring <maximilian.baehring@googlemail.com>
> Date: Di., 19. Mai 2026 um 11:10 Uhr
> Subject: Re: [HE#7078042] Flapping peers between HE.net/AS6939 and ***
> To: Dakota Cole (Hurricane Electric Internet Services) <peering@he.net>
>
>
> Hello
>
> IPv6 is also working
>
> ping6 -nc 1 -I *** tserv1.fra1.he.net
> PING tserv1.fra1.he.net(2001:470:0:69::2) from *** : 56 data bytes
> 64 bytes from 2001:470:0:69::2: icmp_seq=1 ttl=60 time=4.39 ms
>
> --- tserv1.fra1.he.net ping statistics ---
> 1 packets transmitted, 1 received, 0% packet loss, time 0ms
> rtt min/avg/max/mdev = 4.399/4.399/4.399/0.000 ms
>
> traceroute6 -m 10 -w 2 -AI -s *** tserv1.fra1.he.net
> traceroute to tserv1.fra1.he.net (2001:470:0:69::2), 10 hops max, 80
> byte packets
> 1 ixp.ibgp.kleyrex.peering.***.net (***) [***]
> 4.243 ms 4.219 ms 4.211 ms
> 2 * * *
> 3 * * *
> 4 port-channel12.core2.fra1.he.net (2001:470:0:63d::1) [AS6939]
> 5.569 ms 5.908 ms 6.403 ms
> 5 tserv1.fra1.he.net (2001:470:0:69::2) [AS6939] 4.403 ms 4.397 ms 4.388 ms
>
> Max
>
> Am Di., 19. Mai 2026 um 11:07 Uhr schrieb Maximilian Baehring
> <maximilian.baehring@googlemail.com>:
>>
>> Hello
>>
>> the session is okay. an IPv4 trace woks as it should / I expected
>>
>> traceroute to tserv1.fra1.he.net (216.66.80.30), 10 hops max, 60 byte packets
>> 1 * * *
>> 2 10gigabitethernet2-3.core1.fra1.he.net (193.189.82.134) [*] 4.802 ms * *
>> 3 port-channel10.core3.fra1.he.net (72.52.92.69) [AS6939] 9.024 ms
>> 9.318 ms *
>> 4 port-channel12.core2.fra1.he.net (184.104.198.25) [AS6939] 5.728
>> ms 7.401 ms 7.390 ms
>> 5 tserv1.fra1.he.net (216.66.80.30) [AS6939] 4.414 ms 4.398 ms 4.435 ms
>>
>> Am Di., 19. Mai 2026 um 10:54 Uhr schrieb Maximilian Baehring
>> <maximilian@baehring.at>:
>>>
>>> Hello!
>>>
>>> sorry for the late repsonse. there were no changes from my side,
>>> possibly this is a kleyrex problem! I do use the infartucrure of
>>> *** and run a peering session with you that is not using the
>>> Kleyrex rouservers. I will investigate this and email you later
>>> about what i found out. i have 603 days uptime of the router,
>>> bgp is runngs since sept 9, 2024 and the last hat i can see is an
>>> interrupion 9 hours ago in the ipv4/ipv6 session.
>>>
>>> > show protocols all
>>>
>>> as6939 BGP master up 09:04:00 Established
>>> Preference: 100
>>> Input filter: as6939in
>>> Output filter: as6939out
>>> Routes: 90046 imported, 1 exported, 90046 preferred
>>> Route change stats: received rejected filtered ignored
>>> accepted
>>> Import updates: 150170 0 56700 6
>>> 93464
>>> Import withdraws: 2477 0 --- 57651
>>> 1526
>>> Export updates: 93469 93464 4 ---
>>> 1
>>> Export withdraws: 1526 --- --- ---
>>> 0
>>> BGP state: Established
>>> Neighbor address: 193.189.82.134
>>> Neighbor AS: 6939
>>> Neighbor ID: 216.218.253.33
>>> Neighbor caps: refresh AS4
>>> Session: external AS4
>>> Source address: 193.189.82.82
>>> Hold timer: 155/180
>>> Keepalive timer: 18/60
>>>
>>> as6939v6 BGP master up 09:04:05 Established
>>> Preference: 100
>>> Input filter: as6939v6in
>>> Output filter: as6939v6out
>>> Routes: 235856 imported, 1 exported, 235856 preferred
>>> Route change stats: received rejected filtered ignored
>>> accepted
>>> Import updates: 268115 0 1 83
>>> 268031
>>> Import withdraws: 13326 0 --- 1
>>> 13326
>>> Export updates: 268033 268031 1 ---
>>> 1
>>> Export withdraws: 13326 --- --- ---
>>> 0
>>> BGP state: Established
>>> Neighbor address: 2001:7f8:33::a100:6939:1
>>> Neighbor AS: 6939
>>> Neighbor ID: 216.218.253.33
>>> Neighbor caps: refresh AS4
>>> Session: external AS4
>>> Source address: ***
>>> Hold timer: 158/180
>>> Keepalive timer: 52/60
>>>
>>> Max
>>>
>>>
>>>
>>> Am 18.05.2026 um 12:10 schrieb Dakota Cole (Hurricane Electric Internet
[...]

202605200600-0-1.jpg
[0] "202605200600-0-1.jpg"

202605200600-0-2.jpg
[1] "202605200600-0-2.jpg"

202605200600-0-3.jpg
[2] "202605200600-0-3.jpg"

202605200600-0-4.jpg
[3] "202605200600-0-4.jpg"

202605200600-0-5.jpg
[4] "202605200600-0-5.jpg"

202605200600-0-6.jpg
[5] "202605200600-0-6.jpg"

202605200600-0-7.jpg
[6] "202605200600-0-7.jpg"