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FS#3754 - qos-scripts do not "add" the ifb interface before setting it to "up" #8896

openwrt-bot opened this issue Apr 27, 2021 · 0 comments


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openwrt-bot commented Apr 27, 2021


This is device agnostic and applies to the master branch and openwrt-21.02.

Reproducible by setting up /etc/config/qos to a certain $IFACE and running the following command:

/usr/lib/qos/ interface $IFACE | sh -x

The error looks like this:

+ ip link set ifb0 up + tc qdisc del dev ifb0 root + tc qdisc add dev ifb0 root handle 1: hfsc default 30 Cannot find device "ifb0" + tc class add dev ifb0 parent 1: classid 1:1 hfsc sc rate 15000kbit ul rate 15000kbit Cannot find device "ifb0"

PR #4092 has a proposed fix in it.

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