diff options
| -rw-r--r-- | src/vnet/ip/ip_api.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/vnet/ip/ip_api.c b/src/vnet/ip/ip_api.c index 2680d6010dc..fde636c9357 100644 --- a/src/vnet/ip/ip_api.c +++ b/src/vnet/ip/ip_api.c @@ -734,7 +734,13 @@ add_del_route_t_handler (u8 is_multipath, fib_route_path_t *paths = NULL; fib_entry_flag_t entry_flags = FIB_ENTRY_FLAG_NONE; - if (MPLS_LABEL_INVALID != next_hop_via_label) + /* + * the special INVALID label meams we are not recursing via a + * label. Exp-null value is never a valid via-label so that + * also means it's not a via-label and means clients that set + * it to 0 by default get the expected behaviour + */ + if ((MPLS_LABEL_INVALID != next_hop_via_label) && (0 != next_hop_via_label)) { path.frp_proto = FIB_PROTOCOL_MPLS; path.frp_local_label = next_hop_via_label; |