guest wifi QOS
$ cat /etc/config/sqm
config queue 'guest_limit'
option qdisc 'fq_codel'
option script 'simple.qos'
option qdisc_advanced '0'
option linklayer 'none'
option enabled '1'
option verbosity '5'
option interface 'br-guest'
option debug_logging '1'
option download '1600'
option upload '1600'
depends on