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-rw-r--r--plugins/check_ping.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/plugins/check_ping.c b/plugins/check_ping.c
index 0b2afce5..06bf8e76 100644
--- a/plugins/check_ping.c
+++ b/plugins/check_ping.c
@@ -227,7 +227,11 @@ process_arguments (int argc, char **argv)
address_family = AF_INET;
break;
case '6': /* IPv6 only */
+#ifdef USE_IPV6
address_family = AF_INET6;
+#else
+ usage ("IPv6 support not available\n");
+#endif
break;
case 'H': /* hostname */
ptr=optarg;