removed in linux-v3.10 in commit 1a2c6181c4a1922021b4d7df373bba612c3e5f04
@ -17,7 +17,6 @@
#define TCP_QUICKACK 12
#define TCP_CONGESTION 13
#define TCP_MD5SIG 14
#define TCP_COOKIE_TRANSACTIONS 15
#define TCP_THIN_LINEAR_TIMEOUTS 16
#define TCP_THIN_DUPACK 17
#define TCP_USER_TIMEOUT 18