This is not necessary, but it'll be easier to parse in userspace, also given that other places like act_tunnel_key, cls_flower and ip_tunnel_core are also doing so. Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx> --- net/netfilter/nft_tunnel.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/netfilter/nft_tunnel.c b/net/netfilter/nft_tunnel.c index e1184fa..576437f 100644 --- a/net/netfilter/nft_tunnel.c +++ b/net/netfilter/nft_tunnel.c @@ -479,6 +479,9 @@ static int nft_tunnel_opts_dump(struct sk_buff *skb, opts->u.vxlan.gbp)) return -1; } else if (opts->flags & TUNNEL_ERSPAN_OPT) { + if (nla_put_u8(skb, NFTA_TUNNEL_KEY_ERSPAN_VERSION, + opts->u.erspan.version)) + return -1; switch (opts->u.erspan.version) { case ERSPAN_VERSION: if (nla_put_be32(skb, NFTA_TUNNEL_KEY_ERSPAN_V1_INDEX, -- 2.1.0