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FlexQoS FlexQoS 1.2.4 - Flexible QoS Enhancement Script for Adaptive QoS

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ok, generally are there any infos what the wan paket overhead stands for, or generally what exactly value i should use ?
I have vdsl2 with my isp modem in singel user mode (not double nat) and after this there is the rt-ac5300.

I have a 106 dow/20 Up and over vdls2 vectoring pppoe ptm connection.
As the value is 30 the optimum for me ?
 
What does some example Plex connection look like in Tracked Connections?
Like this:
1621951100414.png


It's identified here as streaming, but the graph shows it as a different type of traffic:
1621951166073.png


This is the iptables rule:
1621951241700.png
 
Could anyone shed on light on what the rule for World Wide Web Mark 12003F as the default is intended to do? What is that mark specifically?

It seems to catch my security camera video and dump it in Web Surfing (as intended).
 
Please send a screenshot of the same connection from Merlin’s Classification page.

Also it would be helpful to see if the rule is being hit:
Code:
iptables -t mangle -nvL FlexQoS
Here you go:
1621974379624.png


Code:
iptables -t mangle -nvL FlexQoS
Chain FlexQoS (1 references)
 pkts bytes target     prot opt in     out     source               destination
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 500,4500 MARK xset 0x8006ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 500,4500 MARK xset 0x4006ffff/0xc03fffff
    1    91 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport dports 16384:16415 MARK xset 0x8006ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport sports 16384:16415 MARK xset 0x4006ffff/0xc03fffff
    0     0 MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 119,563 MARK xset 0x8003ffff/0xc03fffff
    0     0 MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 119,563 MARK xset 0x4003ffff/0xc03fffff
 7017  589K MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
 4937  329K MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 1194 MARK xset 0x8003ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 1194 MARK xset 0x8003ffff/0xc03fffff
    0     0 MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 1194 MARK xset 0x4003ffff/0xc03fffff
  310 25420 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 1194 MARK xset 0x4003ffff/0xc03fffff
1095K   55M MARK       tcp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
2933K 4201M MARK       tcp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff
 1332 72157 MARK       tcp  --  *      br0     0.0.0.0/0            192.168.0.67         multiport sports  !80,443,139,445 mark match 0x80000000/0xc03fffff MARK xset 0x8008ffff/0xc03fffff
   25   900 MARK       udp  --  *      br0     0.0.0.0/0            192.168.0.67         multiport sports  !80,443,139,445 mark match 0x80000000/0xc03fffff MARK xset 0x8008ffff/0xc03fffff
  863 56284 MARK       tcp  --  *      eth4    192.168.0.67         0.0.0.0/0            multiport dports  !80,443,139,445 mark match 0x40000000/0xc03fffff MARK xset 0x4008ffff/0xc03fffff
   25   900 MARK       udp  --  *      eth4    192.168.0.67         0.0.0.0/0            multiport dports  !80,443,139,445 mark match 0x40000000/0xc03fffff MARK xset 0x4008ffff/0xc03fffff
 1443  792K MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 80,443 mark match 0x80080000/0xc03f0000 MARK xset 0x8003ffff/0xc03fffff
 1159  464K MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 80,443 mark match 0x40080000/0xc03f0000 MARK xset 0x4003ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 9987 MARK xset 0x8006ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 9987 MARK xset 0x4006ffff/0xc03fffff
    0     0 MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 1337 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 1337 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 1337 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 1337 MARK xset 0x4004ffff/0xc03fffff
 
Here you go:
View attachment 34031

Code:
iptables -t mangle -nvL FlexQoS
Chain FlexQoS (1 references)
pkts bytes target     prot opt in     out     source               destination
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 500,4500 MARK xset 0x8006ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 500,4500 MARK xset 0x4006ffff/0xc03fffff
    1    91 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport dports 16384:16415 MARK xset 0x8006ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport sports 16384:16415 MARK xset 0x4006ffff/0xc03fffff
    0     0 MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 119,563 MARK xset 0x8003ffff/0xc03fffff
    0     0 MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 119,563 MARK xset 0x4003ffff/0xc03fffff
7017  589K MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
4937  329K MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 1194 MARK xset 0x8003ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 1194 MARK xset 0x8003ffff/0xc03fffff
    0     0 MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 1194 MARK xset 0x4003ffff/0xc03fffff
  310 25420 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 1194 MARK xset 0x4003ffff/0xc03fffff
1095K   55M MARK       tcp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
2933K 4201M MARK       tcp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff
1332 72157 MARK       tcp  --  *      br0     0.0.0.0/0            192.168.0.67         multiport sports  !80,443,139,445 mark match 0x80000000/0xc03fffff MARK xset 0x8008ffff/0xc03fffff
   25   900 MARK       udp  --  *      br0     0.0.0.0/0            192.168.0.67         multiport sports  !80,443,139,445 mark match 0x80000000/0xc03fffff MARK xset 0x8008ffff/0xc03fffff
  863 56284 MARK       tcp  --  *      eth4    192.168.0.67         0.0.0.0/0            multiport dports  !80,443,139,445 mark match 0x40000000/0xc03fffff MARK xset 0x4008ffff/0xc03fffff
   25   900 MARK       udp  --  *      eth4    192.168.0.67         0.0.0.0/0            multiport dports  !80,443,139,445 mark match 0x40000000/0xc03fffff MARK xset 0x4008ffff/0xc03fffff
1443  792K MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 80,443 mark match 0x80080000/0xc03f0000 MARK xset 0x8003ffff/0xc03fffff
1159  464K MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 80,443 mark match 0x40080000/0xc03f0000 MARK xset 0x4003ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 9987 MARK xset 0x8006ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 9987 MARK xset 0x4006ffff/0xc03fffff
    0     0 MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 1337 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 1337 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 1337 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 1337 MARK xset 0x4004ffff/0xc03fffff
Traffic is hitting the rule, with about 4GB of data. But that data shows as Web Surfing in your earlier graph.

Do you have any of the Game/Gear Accelerator enabled? That messes up the normal QoS category order.

If not, what is the output of this command?
Code:
tc -s class show dev eth4 parent 1: | grep -A4 $(tc filter show dev eth4 | grep -B1 0x4004ffff | head -1 | sed -En 's/.*flowid (1:1[0-7]).*$/\1/p')
 
Traffic is hitting the rule, with about 4GB of data. But that data shows as Web Surfing in your earlier graph.

Do you have any of the Game/Gear Accelerator enabled? That messes up the normal QoS category order.

If not, what is the output of this command?
Code:
tc -s class show dev eth4 parent 1: | grep -A4 $(tc filter show dev eth4 | grep -B1 0x4004ffff | head -1 | sed -En 's/.*flowid (1:1[0-7]).*$/\1/p')
I'm pretty sure I don't, where would I find that?

Code:
tc -s class show dev eth4 parent 1: | grep -A4 $(tc filter show dev eth4 | grep -B1 0x4004ffff | head -1 | sed -En 's/.*flowid (1:1[0-7]).*$/\1/p')
class htb 1:13 parent 1:1 leaf 8033: prio 3 rate 4915Kbit overhead 18 ceil 49152Kbit burst 6Kb cburst 60788b
Sent 27324736 bytes 367029 pkt (dropped 0, overlimits 0 requeues 0)
rate 168bit 0pps backlog 0b 0p requeues 0
lended: 366893 borrowed: 136 giants: 0
tokens: 154113 ctokens: 154395

Edit: Adding some more settings screens for you:
1621983345197.png
1621983369262.png
1621983443414.png
 
I'm pretty sure I don't, where would I find that?

Code:
tc -s class show dev eth4 parent 1: | grep -A4 $(tc filter show dev eth4 | grep -B1 0x4004ffff | head -1 | sed -En 's/.*flowid (1:1[0-7]).*$/\1/p')
class htb 1:13 parent 1:1 leaf 8033: prio 3 rate 4915Kbit overhead 18 ceil 49152Kbit burst 6Kb cburst 60788b
Sent 27324736 bytes 367029 pkt (dropped 0, overlimits 0 requeues 0)
rate 168bit 0pps backlog 0b 0p requeues 0
lended: 366893 borrowed: 136 giants: 0
tokens: 154113 ctokens: 154395

Edit: Adding some more settings screens for you:
View attachment 34032View attachment 34033View attachment 34034
What does your Upload screenshot look like now? How much data in Streaming? 26 MB?

How about all your tc filters?
Code:
tc filter show dev eth4
 
If your router supports it, it would be on the Game tab, click the "Add" button, and see if any devices already listed in the popup window.
I have no Game tab, so I guess it's not on.

What does your Upload screenshot look like now? How much data in Streaming? 26 MB?

How about all your tc filters?
Code:
tc filter show dev eth4
Yep, roughly 26 MB.

How about all your tc filters?
Code:
https://pastebin.com/kBe5sEXT


Thanks for taking a look!
 
I have no Game tab, so I guess it's not on.


Yep, roughly 26 MB.


https://pastebin.com/kBe5sEXT


Thanks for taking a look!
It seems like the packets aren't being marked properly and may be hitting the AppDB rule for 14**** (meaning iptables didn't change the mark, or didn't match the traffic).

Please run these commands before starting a Plex stream, let it run for a minute, then run the commands again. Please post both the before and after results. Whenever it's convenient for you. I'll review it tomorrow.
Bash:
tc filter show dev eth4 | grep -EB1 "x4004ffff|x40140000"
tc -s class show dev eth4 parent 1: | grep -EA4 "htb 1:1[34]"
iptables -t mangle -nvL FlexQoS | grep 32400
 
It seems like the packets aren't being marked properly and may be hitting the AppDB rule for 14**** (meaning iptables didn't change the mark, or didn't match the traffic).

Please run these commands before starting a Plex stream, let it run for a minute, then run the commands again. Please post both the before and after results. Whenever it's convenient for you. I'll review it tomorrow.
Bash:
tc filter show dev eth4 | grep -EB1 "x4004ffff|x40140000"
tc -s class show dev eth4 parent 1: | grep -EA4 "htb 1:1[34]"
iptables -t mangle -nvL FlexQoS | grep 32400

Before:
Code:
tc filter show dev eth4 | grep -EB1 "x4004ffff|x40140000"
tc -s class show dev eth4 parent 1: | grep -EA4 "htb 1:1[34]"
iptables -t mangle -nvL FlexQoS | grep 32400filter parent 1: protocol all pref 5 u32 fh 827::805 order 2053 key ht 827 bkt 0 flowid 1:13
  mark 0x4004ffff 0xc03fffff (success 3599)
--
filter parent 1: protocol all pref 23 u32 fh 804::800 order 2048 key ht 804 bkt 0 flowid 1:14
  mark 0x40140000 0xc03f0000 (success 30241853)
 


tc -s class show dev eth4 parent 1: | grep -EA4 "htb 1:1[34]"
class htb 1:13 parent 1:1 leaf 8033: prio 3 rate 4915Kbit overhead 18 ceil 49152Kbit burst 6Kb cburst 60788b
 Sent 34996420 bytes 432552 pkt (dropped 0, overlimits 0 requeues 0)
 rate 1496bit 0pps backlog 0b 0p requeues 0
 lended: 432339 borrowed: 213 giants: 0
 tokens: 154113 ctokens: 154395
--
class htb 1:14 parent 1:1 leaf 8035: prio 4 rate 4915Kbit overhead 18 ceil 49152Kbit burst 6Kb cburst 60788b
 Sent 2809730995 bytes 30400021 pkt (dropped 0, overlimits 0 requeues 0)
 rate 34744bit 34pps backlog 0b 0p requeues 0
 lended: 24447007 borrowed: 5953014 giants: 0
 tokens: 152155 ctokens: 154199



iptables -t mangle -nvL FlexQoS | grep 32400
23335 1972K MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
15840 1044K MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
1719K   82M MARK       tcp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
4187K 5936M MARK       tcp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff

After:
Code:
tc filter show dev eth4 | grep -EB1 "x4004ffff|x40140000"
tc -s class show dev eth4 parent 1: | grep -EA4 "htb 1:1[34]"
iptables -t mangle -nvL FlexQoS | grep 32400filter parent 1: protocol all pref 5 u32 fh 827::805 order 2053 key ht 827 bkt 0 flowid 1:13
  mark 0x4004ffff 0xc03fffff (success 3686)
--
filter parent 1: protocol all pref 23 u32 fh 804::800 order 2048 key ht 804 bkt 0 flowid 1:14
  mark 0x40140000 0xc03f0000 (success 30278003)
 
 
 
tc -s class show dev eth4 parent 1: | grep -EA4 "htb 1:1[34]"
class htb 1:13 parent 1:1 leaf 8033: prio 3 rate 4915Kbit overhead 18 ceil 49152Kbit burst 6Kb cburst 60788b
 Sent 35187995 bytes 433181 pkt (dropped 0, overlimits 0 requeues 0)
 rate 2288bit 2pps backlog 0b 0p requeues 0
 lended: 432954 borrowed: 227 giants: 0
 tokens: 154113 ctokens: 154395
--
class htb 1:14 parent 1:1 leaf 8035: prio 4 rate 4915Kbit overhead 18 ceil 49152Kbit burst 6Kb cburst 60788b
 Sent 2815494523 bytes 30436809 pkt (dropped 0, overlimits 0 requeues 0)
 rate 124760bit 116pps backlog 0b 0p requeues 0
 lended: 24483086 borrowed: 5953723 giants: 0
 tokens: 154418 ctokens: 154425
 
 
 
iptables -t mangle -nvL FlexQoS | grep 32400
23508 1984K MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
15955 1051K MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
1738K   83M MARK       tcp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
4304K 6110M MARK       tcp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff
 
what priority settings do you recommend for only gaming in the qos tap ?
 
Before:
Code:
tc filter show dev eth4 | grep -EB1 "x4004ffff|x40140000"
tc -s class show dev eth4 parent 1: | grep -EA4 "htb 1:1[34]"
iptables -t mangle -nvL FlexQoS | grep 32400filter parent 1: protocol all pref 5 u32 fh 827::805 order 2053 key ht 827 bkt 0 flowid 1:13
  mark 0x4004ffff 0xc03fffff (success 3599)
--
filter parent 1: protocol all pref 23 u32 fh 804::800 order 2048 key ht 804 bkt 0 flowid 1:14
  mark 0x40140000 0xc03f0000 (success 30241853)



tc -s class show dev eth4 parent 1: | grep -EA4 "htb 1:1[34]"
class htb 1:13 parent 1:1 leaf 8033: prio 3 rate 4915Kbit overhead 18 ceil 49152Kbit burst 6Kb cburst 60788b
Sent 34996420 bytes 432552 pkt (dropped 0, overlimits 0 requeues 0)
rate 1496bit 0pps backlog 0b 0p requeues 0
lended: 432339 borrowed: 213 giants: 0
tokens: 154113 ctokens: 154395
--
class htb 1:14 parent 1:1 leaf 8035: prio 4 rate 4915Kbit overhead 18 ceil 49152Kbit burst 6Kb cburst 60788b
Sent 2809730995 bytes 30400021 pkt (dropped 0, overlimits 0 requeues 0)
rate 34744bit 34pps backlog 0b 0p requeues 0
lended: 24447007 borrowed: 5953014 giants: 0
tokens: 152155 ctokens: 154199



iptables -t mangle -nvL FlexQoS | grep 32400
23335 1972K MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
15840 1044K MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
1719K   82M MARK       tcp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
4187K 5936M MARK       tcp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff

After:
Code:
tc filter show dev eth4 | grep -EB1 "x4004ffff|x40140000"
tc -s class show dev eth4 parent 1: | grep -EA4 "htb 1:1[34]"
iptables -t mangle -nvL FlexQoS | grep 32400filter parent 1: protocol all pref 5 u32 fh 827::805 order 2053 key ht 827 bkt 0 flowid 1:13
  mark 0x4004ffff 0xc03fffff (success 3686)
--
filter parent 1: protocol all pref 23 u32 fh 804::800 order 2048 key ht 804 bkt 0 flowid 1:14
  mark 0x40140000 0xc03f0000 (success 30278003)



tc -s class show dev eth4 parent 1: | grep -EA4 "htb 1:1[34]"
class htb 1:13 parent 1:1 leaf 8033: prio 3 rate 4915Kbit overhead 18 ceil 49152Kbit burst 6Kb cburst 60788b
Sent 35187995 bytes 433181 pkt (dropped 0, overlimits 0 requeues 0)
rate 2288bit 2pps backlog 0b 0p requeues 0
lended: 432954 borrowed: 227 giants: 0
tokens: 154113 ctokens: 154395
--
class htb 1:14 parent 1:1 leaf 8035: prio 4 rate 4915Kbit overhead 18 ceil 49152Kbit burst 6Kb cburst 60788b
Sent 2815494523 bytes 30436809 pkt (dropped 0, overlimits 0 requeues 0)
rate 124760bit 116pps backlog 0b 0p requeues 0
lended: 24483086 borrowed: 5953723 giants: 0
tokens: 154418 ctokens: 154425



iptables -t mangle -nvL FlexQoS | grep 32400
23508 1984K MARK       tcp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            0.0.0.0/0            multiport sports 32400 MARK xset 0x8004ffff/0xc03fffff
15955 1051K MARK       tcp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    0.0.0.0/0            0.0.0.0/0            multiport dports 32400 MARK xset 0x4004ffff/0xc03fffff
1738K   83M MARK       tcp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
    0     0 MARK       udp  --  *      br0     0.0.0.0/0            192.168.0.2          multiport dports 32400 MARK xset 0x8004ffff/0xc03fffff
4304K 6110M MARK       tcp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff
    0     0 MARK       udp  --  *      eth4    192.168.0.2          0.0.0.0/0            multiport sports 32400 MARK xset 0x4004ffff/0xc03fffff
There are fewer packets in the class stats than in the iptables counters, but it still seems to me that the iptables mark is not surviving. Or somehow the HW acceleration is causing different behavior. Maybe it’s a peculiarity with the AX58U (I assume it’s a 58U due to eth4).

Are these streaming connections already established when QoS starts? I don‘t use Plex so I’m unclear how this behaves from the WAN.
 
There are fewer packets in the class stats than in the iptables counters, but it still seems to me that the iptables mark is not surviving. Or somehow the HW acceleration is causing different behavior. Maybe it’s a peculiarity with the AX58U (I assume it’s a 58U due to eth4).

Are these streaming connections already established when QoS starts? I don‘t use Plex so I’m unclear how this behaves from the WAN.
It's an AX58U, yeah.

As for the connections: not sure, how can I find out?
 
It's an AX58U, yeah.

As for the connections: not sure, how can I find out?
If you restart the Plex server, any pre-existing connections should get reset and classified anew. I don't think it will really help, but I'm not sure what else is going on.
 

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