*/
long rtp_max_payload;
+ /** @brief Whether to allow MTU discovery
+ *
+ * This is `yes' to force it on, `no' to force it off, or `default' to do
+ * whatever the system is configured to do. Note that this only has a
+ * useful effect in IPv4, since IPv6 doesn't permit hop-by-hop
+ * fragmentation.
+ */
+ char *rtp_mtu_discovery;
+
/** @brief Login lifetime in seconds */
long cookie_login_lifetime;