X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fnat44_cli.c;h=7d74f36c754188f3945f44f2b28ea162c414446e;hb=f3d7bd9d4d652b1c4b687267acdb9fdb908a74bd;hp=c73cffa85b25e8d06cb4a63cb105c357a23e8ad4;hpb=9c8142a43c503276f97666cb8d34b39e382f82d6;p=vpp.git

diff --git a/src/plugins/nat/nat44_cli.c b/src/plugins/nat/nat44_cli.c
index c73cffa85b2..7d74f36c754 100644
--- a/src/plugins/nat/nat44_cli.c
+++ b/src/plugins/nat/nat44_cli.c
@@ -1858,8 +1858,13 @@ snat_det_map_command_fn (vlib_main_t * vm,
 	}
     }
 
-  rv = snat_det_add_map (sm, &in_addr, (u8) in_plen, &out_addr, (u8) out_plen,
-			 is_add);
+  if (in_plen > 32 || out_plen > 32)
+    {
+      error = clib_error_return (0, "network prefix length must be <= 32");
+      goto done;
+    }
+
+  rv = snat_det_add_map (sm, &in_addr, in_plen, &out_addr, out_plen, is_add);
 
   if (rv)
     {