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-rw-r--r--src/plugins/nat/nat44_cli.c9
1 files changed, 7 insertions, 2 deletions
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)
{