use IP_DONTFRAG if it is defined.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/cli.c b/src/cli.c
index 7ce2e6edb9..d5559c0b82 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -1437,15 +1437,17 @@ socket_open (socket_st * hd, const char *hostname, const char *service)
       exit (1);
     }
 
+#ifdef IP_DONTFRAG
   if (hints.ai_socktype == SOCK_DGRAM)
     {
       yes = 1;
-      if (setsockopt (sd, IPPROTO_IP, IP_DF,
+      if (setsockopt (sd, IPPROTO_IP, IP_DONTFRAG,
                           (const void *) &yes, sizeof (yes)) < 0)
         {
           perror ("setsockopt(IP_DF) failed");
         }
     }
+#endif
 
   hd->secure = 0;
   hd->fd = sd;