<AuthBy GOSSIP> module supports authentication and
authorisation against a Gossip backend, such as GossipUDP and GossipREDIS.
For more information, see Section 3.134. <GossipUDP> and Section 3.133. <GossipRedis>. <AuthBy
GOSSIP> is currently experimental and will be documented
later.
3.97.1. Gossip
This defines the Gossip module to use for backend
queries.