Due to an unfathomable issue where I would need to recompile with full debug keepalived, keepalived seems to be not seeing the multicast packets on the vrrp-router and thus we need to fallback to the disgusting unicast solution. Well, let's move on.
This adds VRRP support on a management L2 domain. All of this is a bit insecure, we should at least aim to share a password or something.
We will focus on growing it for KlubRZ usecases first and then grow it into a proper external project called Hypervisor NixOS routers.