[ovirt-users] Troubles starting hosted engine

I have lots of extra fun bringing up my hosted engine right now due to two issues. First, either during the hosted-engine --deploy or engine-setup (I can't remember) I was prompted for the IP address of my gateway. Since then that address has changed. I'm unable to start the engine VM if that address isn't reachable so my temporary workaround is to add this old address onto the current gateway. How/where do I change things so that this old address can be truly retired? My second issue might be harder. Again during the setup I was prompted for a location of an ISO file for installing the engine's OS. That location is served by NFS and is auto-mounted by /etc/fstab (and systemd). Here's the hitch: my NFS server is now a VM in my cluster. :-) Since I only have a single hypervisor host right now that ISO isn't reachable when I'm trying to start my engine VM so that I can also start the VM that provides the NFS share. I'm getting away with evil right now by touching an empty file at the same path, which gets obscured once the NFS share is mounted, but it's enough. It's not at all clear to me how I'm supposed to edit things for my hosted engine setup.