c2 -- + ip tcp_metrics show 192.168.119.83 age 5.816sec ssthresh 5 cwnd 87 rtt 82208us rttvar 43617us source 192.168.115.51 10.4.0.67 age 72.122sec cwnd 16 rtt 3172us rttvar 5912us source 10.4.0.51 10.4.0.68 age 72.066sec cwnd 14 rtt 2722us rttvar 3930us source 10.4.0.51 10.4.0.51 age 72.221sec cwnd 10 rtt 3481us rttvar 5348us source 10.4.0.51 10.4.0.83 age 72.116sec cwnd 17 rtt 4580us rttvar 8425us source 10.4.0.51 s2 -- + ip tcp_metrics show 10.4.0.51 age 72.176sec cwnd 3 rtt 1609us rttvar 2877us source 10.4.0.83 192.168.115.51 age 5.839sec cwnd 10 rtt 81262us rttvar 46802us source 192.168.119.83 m2 -- + iptables -t mangle -L POSTROUTING -n Chain POSTROUTING (policy ACCEPT) target prot opt source destination TOS tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:!0x17/0x02 DSCP match 0x01 TOS set 0x01/0xff m3 -- + tc -s -d qdisc show dev ens192 qdisc htb 1: root refcnt 2 r2q 10 default 0x1 direct_packets_stat 0 ver 3.17 direct_qlen 1000 Sent 7736402 bytes 116501 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 qdisc dualpi2 810d: parent 1:1 limit 10000p target 15.0ms tupdate 16.0ms alpha 0.156250 beta 3.195312 l4s_ect coupling_factor 2 drop_on_overload step_thresh 1.0ms drop_dequeue classic_protection 10% Sent 7736402 bytes 116501 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 prob 0.000000 delay_c 0us delay_l 1us pkts_in_c 115801 pkts_in_l 700 maxq 0 ecn_mark 0 step_marks 0 credit -121120 (L) qdisc ingress ffff: parent ffff:fff1 ---------------- Sent 349020610 bytes 234320 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 + tc -s -d class show dev ens192 class htb 1:1 root leaf 810d: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 Sent 7736402 bytes 116501 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 lended: 116501 borrowed: 0 giants: 0 tokens: 3755 ctokens: 3755 + tc -s -d qdisc show dev ens224 qdisc htb 1: root refcnt 2 r2q 10 default 0x1 direct_packets_stat 0 ver 3.17 direct_qlen 1000 Sent 352743104 bytes 234320 pkt (dropped 0, overlimits 206695 requeues 0) backlog 0b 0p requeues 0 qdisc dualpi2 810e: parent 1:1 limit 10000p target 15.0ms tupdate 16.0ms alpha 0.156250 beta 3.195312 l4s_ect coupling_factor 2 drop_on_overload step_thresh 1.0ms drop_dequeue classic_protection 10% Sent 352743104 bytes 234320 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 prob 0.000000 delay_c 0us delay_l 1us pkts_in_c 720 pkts_in_l 225098 maxq 88 ecn_mark 7270 step_marks 7255 credit -6180 (L) qdisc ingress ffff: parent ffff:fff1 ---------------- Sent 6105478 bytes 116501 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 + tc -s -d class show dev ens224 class htb 1:1 root leaf 810e: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 Sent 352743104 bytes 234320 pkt (dropped 0, overlimits 206695 requeues 0) backlog 0b 0p requeues 0 lended: 225818 borrowed: 0 giants: 0 tokens: 3755 ctokens: 3755 + tc -s -d qdisc show dev ifb4ens192 qdisc netem 1: root refcnt 2 limit 1000000 delay 40.0ms Sent 352743544 bytes 234325 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 + tc -s -d qdisc show dev ifb4ens224 qdisc netem 1: root refcnt 2 limit 1000000 delay 40.0ms Sent 7736842 bytes 116506 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0