Hi @cilix789
I was thinking, I could test your Ubuntu-WRT sqm setup and at the same time verify for you that it works on the other WRT models.
That would be great. SQM is not enabled by default, since proper configuration is needed first. There's a good config example in the /etc/sqm folder.
Keep in mind that I'm not renaming interfaces on this one and the switch on the other WRT models is different (WRT3200ACM: eth0 for LAN, eth1 for WAN; rest of WRT models I think have eth1 for LAN and eth0 for WAN), so changes should be made to the configuration files!