infomaniak IPv6 issues

[girish]

@Gengar infomaniak set it up today .

My firewall is more permissive than yours. Note that ICMPv6 is probably not included in your firewall. I cannot completely understand infomaniak settings to suggest one way or another. Unlike IPv4, IPv6 requires ICMPv6 and won't work without it.

[girish]

@Gengar ha, I caught it red handed!

ubuntu@ov-9503b4:~$ curl -6 https://ipv6.api.cloudron.io/api/v1/helper/public_ip
curl: (28) Failed to connect to ipv6.api.cloudron.io port 443 after 135991 ms: Couldn't connect to server

In fact, IPv6 just stopped working overnight just like that.

[Gengar]

@girish Ah ! Does it mean the issue is coming from Infomaniak , like from their internal network config ? Or could it be linked to something in Ubuntu that is installed by Infomaniak when we choose Ubuntu 24.04 (like if their ubuntu wasn’t 100% stock image but a bit edited) .

[scooke]

@Gengar Yes.

[girish]

@Gengar yeah, I think so. A reboot fixed the routing .

[Gengar]

@girish yeah for me too, either a reboot or :

sudo ip -6 neigh flush all
sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1
sleep 2
sudo sysctl -w net.ipv6.conf.all.disable_ipv6=0
sleep 2
sudo netplan apply
sudo systemctl restart docker

it works too, but it's just a workaround.

[girish]

@Gengar haven't checked but setting dhcp6 to false in /etc/netplan/ could help not getting an ipv6 altogether.

[girish]

@Gengar Well. Unfortunately, for me , the server goes unreachable periodically. As in IPv4. Do you hit the same? The whole thing is unstable connectivity wise.

[Gengar]

@girish Mhhh okay, no on my side ipv4 works fine, it's only the ipv6 part that is unstable with the reverse resolution (PTR6) .

[Gengar]

@girish & @joseph , I've reached out to Infomaniak on tuesday and they told me the following today :

Bonjour,
Après demande, nos experts Cloud sont au courant du problème rencontré. Pour le moment, nous n’avons pas encore de solution définitive.
En attendant, une solution temporaire serait de configurer un renouvellement du DHCPv6 via un cron toutes les 12 heures. Cela devrait permettre d’éviter ce type de désagrément jusqu’à ce qu’une correction soit mise en place.
Soyez assuré que ce point est bien pris en compte dans notre liste des tâches à traiter. Il sera priorisé dès que possible.
Merci pour votre patience et votre compréhension.
Merci pour votre confiance. Nous restons à votre disposition.

I will try to do what they suggest and we will see if it's a working workaround or not...

[BrutalBirdie]

@Gengar said in infomaniak IPv6 issues:

Bonjour,
Après demande, nos experts Cloud sont au courant du problème rencontré. Pour le moment, nous n’avons pas encore de solution définitive.
En attendant, une solution temporaire serait de configurer un renouvellement du DHCPv6 via un cron toutes les 12 heures. Cela devrait permettre d’éviter ce type de désagrément jusqu’à ce qu’une correction soit mise en place.
Soyez assuré que ce point est bien pris en compte dans notre liste des tâches à traiter. Il sera priorisé dès que possible.
Merci pour votre patience et votre compréhension.
Merci pour votre confiance. Nous restons à votre disposition.

Translation:

Hello,
Our Cloud experts are aware of the problem you are experiencing. For the moment, we don't have a definitive solution yet.
In the meantime, a temporary solution would be to configure a DHCPv6 renewal via a cron every 12 hours. This should avoid this type of inconvenience until a fix is in place.
Rest assured that this point is well taken into account in our to-do list. It will be prioritized as soon as possible.
Thank you for your patience and understanding.
We are grateful for your confidence. We look forward to hearing from you.

[scooke]

Merci à OiseauBrutal pour le translation!