2 files changed, 20 insertions, 7 deletions

diff --git a/plugins/check_ping.c b/plugins/check_ping.c
index 54402ae..ffe7a7d 100644
--- a/plugins/check_ping.c
+++ b/plugins/check_ping.c
@@ -19,11 +19,15 @@ const char *progname = "check_ping";
 
 #define OPTIONS "\
 -H <host_address> -w <wrta>,<wpl>%% -c <crta>,<cpl>%%\n\
-       [-p packets] [-t timeout] [-L]\n"
+       [-p packets] [-t timeout] [-L] [-4] [-6]\n"
 
 #define LONGOPTIONS "\
 -H, --hostname=HOST\n\
    host to ping\n\
+-4, --use-ipv4\n\
+   Use IPv4 ICMP PING\n\
+-6, --use-ipv6\n\
+   Use IPv6 ICMP PING\n\
 -w, --warning=THRESHOLD\n\
    warning threshold pair\n\
 -c, --critical=THRESHOLD\n\
@@ -46,6 +50,7 @@ the contrib area of the downloads section at http://www.nagios.org\n\n"
 
 #include "config.h"
 #include "common.h"
+#include "netutils.h"
 #include "popen.h"
 #include "utils.h"
 
@@ -106,12 +111,12 @@ main (int argc, char **argv)
                 /* does the host address of number of packets argument come first? */
 #ifdef PING6_COMMAND
 # ifdef PING_PACKETS_FIRST
-        if (is_inet6_addr(addresses[i]))
+        if (is_inet6_addr(addresses[i]) && address_family != AF_INET)
                 asprintf (&command_line, PING6_COMMAND, max_packets, addresses[i]);
         else
                 asprintf (&command_line, PING_COMMAND, max_packets, addresses[i]);
 # else
-        if (is_inet6_addr(addresses[i]))
+        if (is_inet6_addr(addresses[i]) && address_family != AF_INET) 
                 asprintf (&command_line, PING6_COMMAND, addresses[i], max_packets);
         else
                 asprintf (&command_line, PING_COMMAND, addresses[i], max_packets);
@@ -182,6 +187,8 @@ process_arguments (int argc, char **argv)
                 {"packets", required_argument, 0, 'p'},
                 {"nohtml", no_argument, 0, 'n'},
                 {"link", no_argument, 0, 'L'},
+                {"use-ipv4", no_argument, 0, '4'},
+                {"use-ipv6", no_argument, 0, '6'},
                 {0, 0, 0, 0}
         };
 
@@ -196,7 +203,7 @@ process_arguments (int argc, char **argv)
         }
 
         while (1) {
-                c = getopt_long (argc, argv, "VvhnLt:c:w:H:p:", long_options, &option_index);
+                c = getopt_long (argc, argv, "VvhnL46t:c:w:H:p:", long_options, &option_index);
 
                 if (c == -1 || c == EOF)
                         break;
@@ -216,6 +223,12 @@ process_arguments (int argc, char **argv)
                 case 'v':       /* verbose mode */
                         verbose = TRUE;
                         break;
+                case '4':       /* IPv4 only */
+                        address_family = AF_INET;
+                        break;
+                case '6':       /* IPv6 only */
+                        address_family = AF_INET6;
+                        break;
                 case 'H':       /* hostname */
                         ptr=optarg;
                         while (1) {
diff --git a/plugins/netutils.c b/plugins/netutils.c
index dc679e2..60410c6 100644
--- a/plugins/netutils.c
+++ b/plugins/netutils.c
@@ -326,11 +326,11 @@ is_host (char *address)
 int
 is_addr (char *address)
 {
-        if (is_inet_addr (address))
+        if (is_inet_addr (address) && address_family != AF_INET6)
                 return (TRUE);
 
 #ifdef USE_IPV6
-        if (is_inet6_addr (address))
+        if (is_inet6_addr (address) && address_family != AF_INET)
                 return (TRUE);
 #endif
 
@@ -374,7 +374,7 @@ int
 is_hostname (char *s1)
 {
 #ifdef USE_IPV6
-        return resolve_host_or_addr (s1, AF_UNSPEC);
+        return resolve_host_or_addr (s1, address_family);
 #else
         return resolve_host_or_addr (s1, AF_INET);
 #endif