Opened a bug for the following (https://bugs.busybox.net/show_bug.cgi?id=12791):

I am running the 
https://busybox.net/downloads/binaries/1.31.0-defconfig-multiarch-musl/busybox-armv8l
 on an Android device (Android 7.1.1 and kernel 3.18), and I can't get much of 
`tc` to work.  `tc qdisc show` works as expected, but if I run 
`/system/bin/busybox-armv8l tc qdisc show dev eth0` I get the error:

`tc: invalid argument '_=/system/bin/busybox-armv8l' to 'command'`

I have also tried creating a link to the binary as shown on 
https://busybox.net/downloads/BusyBox.html under usage.  The result was the 
same.

Attempting to add some delay via Netem with `/system/bin/busybox-armv8l tc 
qdisc add dev eth0 root netem delay 3ms` results in `tc: invalid argument 
'netem' to 'command'`. Similarly, an attempt to use a token buffer filter like 
`tc qdisc add dev eth0 root tbf rate 256kbit buffer 1600 limit 3000` resulted 
in `tc: invalid argument 'tbf' to 'command'`.  Trying to delete a qdisc like 
`tc qdisc del dev eth0 root` results in `tc: command line is not complete, try 
"help"`.  These are all standard tc commands.

As the help shows, usage is tc OBJECT CMD [dev STRING]... in the "delete" 
example above, the OBJECT is qdisc, the CMD is del, and the dev string is dev 
eth0 root.

I think maybe I'm missing something fundamental, but not sure what it could be. 
 Thanks!!
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