What will happen when I enable IPv6 on Cloudron when some domains don't support it?

[msbt]

Wasn't sure where to put that question, lets try it here

I have a server that is IPv6 capable, but the domains that are added are a mix of manual/wildcard/Hetzner DNS/Cloudflare DNS. What will happen when I enable v6 in Cloudron? Will it try to get certificates for the domains that don't have AAAA records and eventually crash or just ignore them? Just asking because I don't have access to all domains at the moment and don't want the sites to crash

[girish]

Good question... For the domains where it figures out that AAAA records are not in sync, it will fail to get certs. Apps will not go down unless you try to change the location/re-configure them which will trigger DNS Sync sequence and then result in an error state.

If you change the provider of the things you don't control to no-op, and make sure A/IPv4 is correct, then it won't crash and just ignore them. Certs should also be renewed (as long as there is no incorrect AAAA record).

[msbt]

Thanks @girish, just to clarify, if I were to add/change something on an IPv4 only domain, like a redirect, alias or anything else in the location (after enabling IPv6), it will leave the app in an error state which can only be resolved by setting the domain to no-op and retry the task?

[girish]

@msbt yes, exactly. It will also get into error state only after some time (because it will retry a lot)...