socket option for kernel TLS support new in linux commit 3c4d7559159bfe1e3b94df3a657b2cda3a34e218
@@ -263,6 +263,7 @@ struct linger {
#define SOL_ALG 279
#define SOL_NFC 280
#define SOL_KCM 281
+#define SOL_TLS 282
#define SOMAXCONN 128