Harden check with unspec

1 files changed, 2 insertions, 2 deletions

diff --git a/plugins/check_fping.c b/plugins/check_fping.c
index 1c2b7689..cf9c2d1c 100644
--- a/plugins/check_fping.c
+++ b/plugins/check_fping.c
@@ -83,14 +83,14 @@ int main(int argc, char **argv) {
 
         /* compose the command */
 #ifdef PATH_TO_FPING6
-        if (address_family != AF_INET && is_inet6_addr(server)) {
+        if (address_family == AF_INET6 || (address_family == AF_UNSPEC && is_inet6_addr(server))) {
                 fping_prog = strdup(PATH_TO_FPING6);
         } else {
                 xasprintf(&option_string, "%s-4 ", option_string);
                 fping_prog = strdup(PATH_TO_FPING);
         }
 #else
-        if (address_family != AF_INET) {
+        if (address_family == AF_INET6 || (address_family == AF_UNSPEC && is_inet6_addr(server))) {
                 // -4 / -6 must be set explicitly as when a host has dual stack
                 // if we don't specify -4 then fping selects ipv6 which can mess
                 // with some checks.