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-rw-r--r--net/dccp/proto.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index a06b5641287a..b0ebf853cb07 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -191,6 +191,9 @@ int dccp_init_sock(struct sock *sk, const __u8 ctl_sock_initialized)
struct dccp_sock *dp = dccp_sk(sk);
struct inet_connection_sock *icsk = inet_csk(sk);
+ pr_warn_once("DCCP is deprecated and scheduled to be removed in 2025, "
+ "please contact the netdev mailing list\n");
+
icsk->icsk_rto = DCCP_TIMEOUT_INIT;
icsk->icsk_syn_retries = sysctl_dccp_request_retries;
sk->sk_state = DCCP_CLOSED;