c2
--

+ ip tcp_metrics show
192.168.119.83 age 6.319sec ssthresh 185 cwnd 130 rtt 81844us rttvar 43851us source 192.168.115.51
10.4.0.68 age 72.020sec cwnd 17 rtt 4299us rttvar 6699us source 10.4.0.51
10.4.0.51 age 72.175sec cwnd 10 rtt 3646us rttvar 5655us source 10.4.0.51
10.4.0.83 age 72.078sec cwnd 17 rtt 3592us rttvar 5307us source 10.4.0.51


s2
--

+ ip tcp_metrics show
10.4.0.51 age 72.211sec cwnd 10 rtt 1609us rttvar 2881us source 10.4.0.83
192.168.115.51 age 6.412sec cwnd 10 rtt 81730us rttvar 46554us source 192.168.119.83


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 7869902 bytes 118523 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc dualpi2 80df: 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 7869902 bytes 118523 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
prob 0.000000 delay_c 0us delay_l 1us
pkts_in_c 117823 pkts_in_l 700 maxq 0
ecn_mark 0 step_marks 0
credit -121120 (L)

qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 350616622 bytes 235174 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 80df: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 7869902 bytes 118523 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 118523 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 354039088 bytes 235176 pkt (dropped 0, overlimits 212443 requeues 0) 
 backlog 0b 0p requeues 0
qdisc dualpi2 80e0: 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 354039088 bytes 235176 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
prob 0.000000 delay_c 0us delay_l 0us
pkts_in_c 719 pkts_in_l 231957 maxq 89
ecn_mark 10239 step_marks 10222
credit -3260 (L)

qdisc ingress ffff: parent ffff:fff1 ---------------- 
 Sent 6210726 bytes 118525 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 80e0: prio 0 quantum 200000 rate 50Mbit ceil 50Mbit linklayer ethernet burst 1600b/1 mpu 0b cburst 1600b/1 mpu 0b level 0 
 Sent 354039088 bytes 235176 pkt (dropped 0, overlimits 212443 requeues 0) 
 backlog 0b 0p requeues 0
 lended: 232676 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 354039408 bytes 235179 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 7870426 bytes 118530 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0