Since commit 656c8e9cc1ba ("netfilter: conntrack: Use consistent ct id hash calculation") the ct id will not change from initialization to confirmation. Removing the confirmation check allows for things like adding an element to a 'typeof ct id' set in prerouting upon reception of the first packet of a new connection, and then being able to reference that set consistently both before and after the connection is confirmed. Signed-off-by: Brett Mastbergen <brett.mastbergen@xxxxxxxxx> --- net/netfilter/nft_ct.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c index 322bd674963e..a1b0aac46e9e 100644 --- a/net/netfilter/nft_ct.c +++ b/net/netfilter/nft_ct.c @@ -177,8 +177,6 @@ static void nft_ct_get_eval(const struct nft_expr *expr, } #endif case NFT_CT_ID: - if (!nf_ct_is_confirmed(ct)) - goto err; *dest = nf_ct_get_id(ct); return; default: -- 2.20.1