[lime-users] propagating settings

We have multiple lime nodes connected to each other. How can we have hostnames we set on one router propagate to the entire network? A related issue is that I am trying to install Sandstorm on a small computer in the network. As far as I can tell from the instruction <https://docs.sandstorm.io/en/latest/administering/faq/#can-i-run-sandstorm-on-a-totally-offline-server-or-airgapped-network>, this should be possible if I setup a dnsmasq <https://davejamesmiller.wordpress.com/2013/03/14/installing-dnsmasq-wildcard-local-domains-debian/>. Is it clear to anyone whether this needs to be done on the sandstorm server, or on the lime router, or across the entire lime network?