# Server luistert niet op IPv6
**URL:** https://meta.discourse.org/t/server-not-listening-on-ipv6/188288
**Category:** Support
**Created:** [27 april 2021 om 16:44 UTC](https://meta.discourse.org/t/server-not-listening-on-ipv6/188288 "2021-04-27T16:44:55Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@elopio](https://meta.discourse.org/u/elopio)
#### Post date: [27 april 2021 om 16:44 UTC](https://meta.discourse.org/t/server-not-listening-on-ipv6/188288/1 "2021-04-27T16:44:55Z")
Our Let’s encrypt certificate failed to renew today. It was because the server is not responding on IPv6. For now we fixed it by removing the IPv6 entry from the DNS.
I guess this was working before, but I don’t really know. I’m not sure what to check here. Any pointers?
The firewall seems ok:
```plaintext
$ sudo ufw status
Status: active
To Action From
-- ------ ----
[...]
80 (v6) ALLOW Anywhere (v6)
80/tcp (v6) ALLOW Anywhere (v6)
443/tcp (v6) ALLOW Anywhere (v6)
```
But it’s only listening on IPv4:
```plaintext
$ ss -tulpn | grep -e 80 -e 443
tcp LISTEN 0 128 0.0.0.0:80 0.0.0.0:*
tcp LISTEN 0 128 0.0.0.0:443 0.0.0.0:*
```
---
### Author:  [@Falco](https://meta.discourse.org/u/Falco)
#### Post date: [27 april 2021 om 17:39 UTC](https://meta.discourse.org/t/server-not-listening-on-ipv6/188288/2 "2021-04-27T17:39:19Z")
Installs following [Discourse official Standard Installation](https://meta.discourse.org/t/discourse-official-standard-installation/142537) will work just fine on IPv6 provided the admin setup the DNS AAAA entry and the host machine has IPv6 connectivity. This is tested in the VPS offering for Digital Ocean constantly by our team.
Using other providers and install methods introduce many variables and we aren’t able to provide support to all possible combinations.
That said, can you share the output of `docker ps` ?
---
### Author:  [@elopio](https://meta.discourse.org/u/elopio)
#### Post date: [5 mei 2021 om 23:25 UTC](https://meta.discourse.org/t/server-not-listening-on-ipv6/188288/3 "2021-05-05T23:25:34Z")
Sure thing:
```plaintext
$ sudo docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
15ceb9642e9b local_discourse/app "/sbin/boot" 3 months ago Up 3 months 0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp app
```
thank you!