Print the list of data link types (-L) to stdout instead of stderr

[tcpdump] / tcpdump.c

diff --git a/tcpdump.c b/tcpdump.c
index df4bc7a7f3959173816636c3346000eb0a3f7a64..b04eb4a9631d43d6a5247851ca341b587ca75b41 100644 (file)
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -471,27 +471,27 @@ show_dlts_and_exit(pcap_t *pc, const char *device)
         * not in monitor mode).
         */
        if (supports_monitor_mode)
-               (void) fprintf(stderr, "Data link types for %s %s (use option -y to set):\n",
+               (void) fprintf(stdout, "Data link types for %s %s (use option -y to set):\n",
                    device,
                    Iflag ? "when in monitor mode" : "when not in monitor mode");
        else
-               (void) fprintf(stderr, "Data link types for %s (use option -y to set):\n",
+               (void) fprintf(stdout, "Data link types for %s (use option -y to set):\n",
                    device);
 
        for (i = 0; i < n_dlts; i++) {
                dlt_name = pcap_datalink_val_to_name(dlts[i]);
                if (dlt_name != NULL) {
-                       (void) fprintf(stderr, "  %s (%s)", dlt_name,
+                       (void) fprintf(stdout, "  %s (%s)", dlt_name,
                            pcap_datalink_val_to_description(dlts[i]));
 
                        /*
                         * OK, does tcpdump handle that type?
                         */
                        if (!has_printer(dlts[i]))
-                               (void) fprintf(stderr, " (printing not supported)");
-                       fprintf(stderr, "\n");
+                               (void) fprintf(stdout, " (printing not supported)");
+                       fprintf(stdout, "\n");
                } else {
-                       (void) fprintf(stderr, "  DLT %d (printing not supported)\n",
+                       (void) fprintf(stdout, "  DLT %d (printing not supported)\n",
                            dlts[i]);
                }
        }