Traffic Limiter on WAN interface and Floating Rule

  • Hi,

    As I have a shitty asymmetric DSL connection (5,6 Mbps down; 0,9 Mbps up), I tried to implement some bufferbloat mitigation with the Traffic Limiter and the fq_codel scheduler, as stated here.
    The problem with this method is that the rule is applied on the LAN interface. I want it to be applied on the WAN interface, as I have a second WAN interface with an LTE connection in failover, with totally different bandwidths.

    This is what I have done:

    • I created two limiters, "download" and "upload", set at 95 % of the max bandwidth.

    • I created the queues "out" and "in", respectively for the limiters "upload" and "download", without any mask.

    • I created a Floating Rule with settings linked on images below.

    When the rule is applied on LAN, bufferbloat is really mitigated, and I get an A on dslreports test.
    When the rule is applied on my WAN via a floating rule, this happens depending of the in/out settings I changed:

    • nothing is mitigated;

    • upload is completely broken and blocked;

    • download speeds are at upload speeds.

    I don't know what to do. I need your help guys.

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