Group destination (and multi-hop)

[GIPdA]

Hello!

I'm experimenting a bit with Reticulum (with a specific application in mind), and currently on Group destinations but I'm not too sure how it works.

Based on the Echo example, I share an Identity and a symmetric key between server and client, create a Group IN destination, and send a packet to the same OUT destination.
My expectation was that multiple servers instances would receive the packet, but only the first one started does. Am I missing something? Some limitation on being localhost? I'm also assuming that's how it's supposed to be used...

On the subject of Group and multi-hop, I understand that it needs multicast and that's not yet implemented. But the documentation says below Destination Naming, the Group type "Supports multiple hops indirectly, but must first be established through a single destination.", and Im no too sure what that means. My guess is that the path must exist first (by means of a Single dest on the same identity?), but as I can't get it to work without hops, hard to try stuff.

Some enlightenment would be much appreciated, thanks 😊

group_destination = RNS.Destination(
        group_identity,
        RNS.Destination.IN,
        RNS.Destination.GROUP,
        APP_NAME,
        "echo",
        "group"
    )
    group_destination.load_private_key(gdestination_pkey)

-Benjamin