1// Test that SYN with ACE flags and without 2// ACE flags got dropped. Although we disable 3// ECN, we shouldn't consider this as blackholed 4// as these are dropped due to congestion 5 6`./defaults.sh 7sysctl -q net.ipv4.tcp_ecn=3 8` 9 10 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 4 11+.002 ... 3.1 connect(4, ..., ...) = 0 12 13+.002 > [noecn] SEWA 0:0(0) <mss 1460,sackOK,TS val 100 ecr 0,nop,wscale 8> 14+.02~+1.1 > [noecn] SEWA 0:0(0) <mss 1460,sackOK,TS val 100 ecr 0,nop,wscale 8> 15+.02~+1.1 > [noecn] S 0:0(0) <mss 1460,sackOK,TS val 100 ecr 0,nop,wscale 8> 16+.02~+1.1 > [noecn] S 0:0(0) <mss 1460,sackOK,TS val 100 ecr 0,nop,wscale 8> 17+0.1 < [noecn] S. 0:0(0) ack 1 win 32767 <mss 1460,nop,nop,sackOK,nop,wscale 8> 18+0~+0.01 > [noecn] . 1:1(0) ack 1 19