-static u_long lcp_echos_pending = 0; /* Number of outstanding echo msgs */
-static u_long lcp_echo_number = 0; /* ID number of next echo frame */
-static u_long lcp_echo_timer_running = 0; /* TRUE if a timer is running */
-
-u_long lcp_echo_interval = 0;
-u_long lcp_echo_fails = 0;
+static uint32 lcp_echos_pending = 0; /* Number of outstanding echo msgs */
+static uint32 lcp_echo_number = 0; /* ID number of next echo frame */
+static uint32 lcp_echo_timer_running = 0; /* TRUE if a timer is running */