lb: vpp hang when executing "lb flush" commands with more parameters.

- get all vip list.
- get all as list per vip.

Ticket: VPP-1778
Type: fix

Change-Id: I0d82f38960ef1264d04ac07589a555d01f6e8110
Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/plugins/lb/cli.c b/src/plugins/lb/cli.c
index a12a63354cc..4f64755f4d7 100644
--- a/src/plugins/lb/cli.c
+++ b/src/plugins/lb/cli.c
@@ -542,6 +542,12 @@ lb_flush_vip_command_fn (vlib_main_t * vm,
       }
     else if (unformat(line_input, "port %d", &port))
       ;
+    else
+      {
+        error = clib_error_return (0, "unknown input '%U'",
+          format_unformat_error, line_input);
+        goto done;
+      }
   }
 
   if (port == 0)