1#value_indexed 2TCP_NODELAY 1 3TCP_MAXSEG 2 4TCP_CORK 3 5TCP_KEEPIDLE 4 6TCP_KEEPINTVL 5 7TCP_KEEPCNT 6 8TCP_SYNCNT 7 9TCP_LINGER2 8 10TCP_DEFER_ACCEPT 9 11TCP_WINDOW_CLAMP 10 12TCP_INFO 11 13TCP_QUICKACK 12 14TCP_CONGESTION 13 15TCP_MD5SIG 14 16TCP_COOKIE_TRANSACTIONS 15 17TCP_THIN_LINEAR_TIMEOUTS 16 18TCP_THIN_DUPACK 17 19TCP_USER_TIMEOUT 18 20TCP_REPAIR 19 21TCP_REPAIR_QUEUE 20 22TCP_QUEUE_SEQ 21 23TCP_REPAIR_OPTIONS 22 24TCP_FASTOPEN 23 25TCP_TIMESTAMP 24 26TCP_NOTSENT_LOWAT 25 27TCP_CC_INFO 26 28TCP_SAVE_SYN 27 29TCP_SAVED_SYN 28 30TCP_REPAIR_WINDOW 29 31TCP_FASTOPEN_CONNECT 30 32TCP_ULP 31 33TCP_MD5SIG_EXT 32 34TCP_FASTOPEN_KEY 33 35TCP_FASTOPEN_NO_COOKIE 34 36TCP_ZEROCOPY_RECEIVE 35 37TCP_INQ 36 38