Config help: Firewall modify / marking packets not working or detected by traffic shaper

Hi!

I'm trying to learn how to set up QoS so that I get bandwidth priority to the game League of Legends.

I've mostly followed what I can glean from this post as reference: https://community.ubnt.com/t5/EdgeRouter/ERlite-Home-QoS-Setup/td-p/901406 as well as the various docs.

Here's what I have right now in my config:

mark the packets (numerous sources report these ports as the right ones)

firewall {
    ... other out-of-the-box rules ...
    modify lolports {
        rule 100 {
            action modify
            description loludp
            destination {
                port 5000-5500
            }
            modify {
                mark 100
            }
            protocol udp
        }
        rule 101 {
            description loltcp
            destination {
                port 2099,5222,5223,8393-8400
            }
            modify {
                mark 101
            }
            protocol tcp
        }
    }
}

traffic policy based on those packets

traffic-policy {             
    shaper league-up {       
        bandwidth 5mbit      
        class 10 {           
            bandwidth 80%    
            burst 15k        
            match loltcp {   
                mark 101     
            }                
            match loludp {   
                mark 100     
            }                
            priority 0       
        }                    
        default {            
            bandwidth 20%    
            priority 7       
        }                    
    }                        
}                            

Unfortunately, however, it looks like I'm doing something wrong.

When I do `show queueing ethernet eth0`, I see this:

eth0 Queueing:
Class      Policy               Sent     Rate  Dropped Overlimit  Backlog
root       shaper            8051550               707    17708        0
10         fair-queue              0        0        0        0        0
default    fair-queue        8051669    45272      707        0        0

I believe this means the class I've set in the traffic-policy for catching these packets isn't actually getting anything. This is while I open up, launch, and play the game for a bit.

I would really appreciate any pointers on what I'm doing wrong!

As I understand it, what I should be doing is:

1. Have a firewall that marks all League-related packets with some id

2. Have a traffic policy shaper that matches based on those marked ids

3. Make the shaper give more bandwidth to the matched packets

I'm not sure which part of this is wrong right now (maybe all wrong haha)