I don’t use android but do you use any firewall on it? Perhaps you must allow the owncloud app to use your wifi connection? The desktop client/webdav is working via your home network?
With the public ip address (htttps://188.xxx.xxx.xxx) the server is found, but the certifate must be confirm. but than the message come: An unknown error is occured,
Well I imagine the reason it’s not working via the app and connecting to the ip address is that the certificate is not issued to your ip, but your domain instead.
It’s good that you can reach your server via the ip though, it suggests the issue with the domain is dns related. It’s very difficult to say what the problem is without seeing your web server configuration, ssl configuration and how you’ve got dns set up.
a) I’m not sure overwrite.cli.url is what you think it is.
b) Why are you try to access the root domain in the above screenshot? You’re serving nextcloud from subdomain.domain.net/nextcloud.
c) I’m assuming you forgot to remove your domain from the above config - needless to say I have tried accessing that address and I can access it.
If your dns entry also resolves an ipv6 address, you should tell your server to answer ipv6 requests as well. On your home network, you have dual stack meaning that ipv6 is preferred. On the mobile network you only have ipv4. 2 possible solutions:
tell your server to handle ipv6: check with netstat -tlpuen if apache already listens to ipv6 (https://httpd.apache.org/docs/2.4/en/bind.html) and the address from the ssllabs-test really is the ipv6-address of your server (see ifconfig).
only use a dns name that resolves ipv4 only (you need to use a dynamic dns provider, such as no-ip.com (there are others as well)).
https://httpd.apache.org/docs/2.4/en/bind.html
In which file must i do the entry
"Listen [2001:db8::a00:20ff:fea7:ccea]:80" an in my case “Listen [2001:db8::a00:20ff:fea7:ccea]:443” . In ports.conf or in my host or in apache.conf or in all?
No it does not correspondent.
The ipv6 address, which is resolved by your hostname *.dynv6.net, is ipv6 from the router (fritzbox).
The addresses in the output of ifconfig ist the ipv6 from the server.
And the server is behind the router.
Ok, i make an dynv6.net an A and AAAA entry with my ipv6 adress from nextcloud server
these are the entries, the other two are the entries from dyn-dynamic service.
Not sure what you are doing. 5405:: is no valid ip address, no idea where it is coming from. You should add the ip address you can see via ifconfig. You can try from an external host, if you can ping this ipv6.
It’s also a bit strange that you have two different ipv6 addresses (of two different networks). Does your ISP provide ipv6 and you set up a tunnel on top?