--- plugins/check_ping.c.t	2004-08-26 15:44:31.000000000 -0700
+++ plugins/check_ping.c	2004-08-26 16:09:14.000000000 -0700
@@ -388,6 +388,16 @@
 			strcpy (warn_text, WARN_DUPLICATES);
 		}
 
+		/* RHEL 3 puts Destination Host Unreachable messages on stdout,
+		 * not stderr
+		 */ 
+		if (strstr (input_buffer, "Network is unreachable"))
+			terminate (STATE_CRITICAL, "PING CRITICAL - Network unreachable (%s)",
+								 server_address);
+		else if (strstr (input_buffer, "Destination Host Unreachable"))
+			terminate (STATE_CRITICAL, "PING CRITICAL - Host Unreachable (%s)",
+								 server_address);
+
 		/* get the percent loss statistics */
 		if (sscanf
 					(input_buffer, "%*d packets transmitted, %*d packets received, +%*d errors, %d%% packet loss",
@@ -400,6 +410,13 @@
 				|| sscanf
 					(input_buffer, "%*d packets transmitted, %*d received, %d%% loss, time", &pl) == 1
 					/* Suse 8.0 as reported by Richard * Brodie */
+				|| sscanf
+					(input_buffer, "%*d packets transmitted, %*d received, +%*d errors, %d%% packet loss, time", &pl) == 1
+					/* 5 packets transmitted, 0 received, +5 errors, 100% packet loss, time 4018ms */
+					/* 5 packets transmitted, 0 received, +4 errors, 100% packet loss, time 4021ms */
+				|| sscanf
+					(input_buffer, "%*d packets transmitted, %*d received, %d%% packet loss, time", &pl) == 1
+					/* Above two are for RHEL 3 as reported by Dan Stromberg */
 				)
 			continue;