When configuring Cross-site replication:

<stack name="xsite" extends="udp">
    <relay.RELAY2 site="LON" xmlns="urn:org:jgroups" max_site_masters="10" can_become_site_master="true"/>
    <remote-sites default-stack="relay-global">
        <remote-site name="LON"/>
        <remote-site name="NYC"/>
    </remote-sites>
</stack>

<remote-sites> and <remote-site> are misleading names for these configuration options, because it's not a list of remote sites.

They correspond to RELAY2's <sites><site> configuration which includes all sites, both local and remote, and therefore should be named accordingly.