-better error reporting

1 files changed, 6 insertions, 1 deletions

diff --git a/src/vpn/gnunet-helper-vpn.c b/src/vpn/gnunet-helper-vpn.c
index 77512832d..5a1b708e2 100644
--- a/src/vpn/gnunet-helper-vpn.c
+++ b/src/vpn/gnunet-helper-vpn.c
@@ -553,7 +553,12 @@ main (int argc, char **argv)
 
   if (-1 == (fd_tun = init_tun (dev)))
   {
-    fprintf (stderr, "Fatal: could not initialize tun-interface\n");
+    fprintf (stderr, "Fatal: could not initialize tun-interface `%s'  with IPv6 %s/%s and IPv4 %s/%s\n",
+             dev,
+             argv[2],
+             argv[3],
+             argv[4],
+             argv[5]);
     return 1;
   }