[Samba] Floating IP breaks AD replication

[Sven Wick]

> Your DC's really should have fixed IP's

Well, they have.
But there are still projects
which can not use multiple DNS Names.

e.g.

- https://gitlab.com/gitlab-org/gitlab/-/issues/139
- https://github.com/go-gitea/gitea/issues/6898

So I use an additional floating IP

> I cannot recommend anyone using your method

Why not? Even if AD replication is quite robust
concerning multi master
this setup enforces that manual changes
are done only by one DC not on separate DCs