+ struct timeval udp_reply_sent; /* Last time a (gratuitous) UDP probe reply was sent */
+ struct timeval udp_ping_sent; /* Last time a UDP probe was sent */
+ timeout_t udp_ping_timeout; /* Ping timeout event */
+
+ struct timeval mtu_ping_sent; /* Last time a MTU probe was sent */
+
+ struct timeval mtu_info_sent; /* Last time a MTU_INFO message was sent */
+ struct timeval udp_info_sent; /* Last time a UDP_INFO message was sent */
+
+ length_t maxrecentlen; /* Maximum size of recently received packets */
+