Kind of with Alma8x i did have to, sorry i changed some after then manual in a config file but don’t remember which one, then it worked.
But the not activated at boot, if done some in the GUI from Virtualmin also not knowing which one or that was a cause at all causes this. Because i only did see it later at a reboot.
I didn’t post it while thought it was a “problem” i was responsible for myself.
But have see this now 2 times here in Forum, so maybe a kind of howto / help here needed, of if someone finds out how to reproduce it.
Your reply:
For this in GUI “from Network discovery” and “iface ens18 inet6 manual” i think that was correct behaviour, while “from Network discovery” is not the same as DHCP , only if DHCP then is really enabled it works to see a adress. It was for IPV6 on manual
Some links for info why IPV6 and testing:
https://en.internet.nl/faqs/ipv6/
https://ip6.nl/
Put here your external ipv6 from the domain / box: