here are the settings I'm using for the vrrp.
On submit I get a warning the vlan is invalid. The config will apply, and I can see it in the CLI - all looks fine, but it doesn't work. The VRRP address exists in the box (so to speak) the MM can ping itself on that address, but it doesn't get attached to the vlan and make it onto the wire.
This must be something to do with the network setup for the MM, that I've done wrong... but I don't know what.