On Fri, 10 Jul 2015 08:02:08 -0700
Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx> wrote:
> diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h
> index eaaea6208b42..3635b7797508 100644
> --- a/include/uapi/linux/if_bridge.h
> +++ b/include/uapi/linux/if_bridge.h
> @@ -182,6 +182,7 @@ struct br_mdb_entry {
> #define MDB_TEMPORARY 0
> #define MDB_PERMANENT 1
> __u8 state;
> + __u16 vid;
> struct {
> union {
> __be32 ip4;
You added a new field into an unused hole in a data
structure shared as part of API with user space.
This seems like it might break when newer iproute
is run on older kernels. The vid would always be 0
on show and ignored when adding entries.
