1// Test that when accurate ECN is disabled, 2// client uses RFC3168 ECN for SYN 3 4`./defaults.sh 5sysctl -q net.ipv4.tcp_ecn=1 6` 7 8 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 4 9+.002 ... 0.052 connect(4, ..., ...) = 0 10 11+.002 > [noecn] SEW 0:0(0) <mss 1460,sackOK,TS val 100 ecr 0,nop,wscale 8> 12+0.05 < [noecn] S. 0:0(0) ack 1 win 32767 <mss 1460,sackOK,nop,nop,nop,wscale 8> 13+.002 > [noecn] . 1:1(0) ack 1 14