There's an endpoint to set initial hub mesh peers. Now that the issue surfaced again, I'll probably add the to the UI as well.
http://hubs.ip.address.here/hub/advanced/setInitialHubMeshPeers?192.168.1.2,192.168.1.3, with comma separated IP address list as a query string. It should say "done" when list is updated. The list takes effect when hub mesh is restarted next time.
http://hubs.ip.address.here/hub/advanced/setInitialHubMeshPeers?none resets the list.
http://hubs.ip.address.here/hub/advanced/getInitialHubMeshPeers shows the list in plain text.
