+The proxy command has a fairly nuanced policy for when keyservers are
+queried when processing host. If the host userID is not found in
+either the user's keyring or in the known_hosts file, then the
+keyserver is queried for the host userID. If the host userID is found
+in the user's keyring, then the keyserver is not checked. This is
+because... If the host userID is not found in the user's keyring, but
+the host is listed in the known_hosts file, then defered check is
+scheduled.