Adding packet loss with Dummynet to simulate bad WAN

[bradmck]

Hi All:

I'm relatively new to OPNsense so am maybe missing something.  I'd like to intentionally add packet loss to a traffic shaper pipe.  This is so I can do some testing and simulate a bad WAN connection.  I found this post from a few years ago which talks about it:  https://forum.opnsense.org/index.php?topic=7140.0

I see that the delay option to add latency is exposed in the GUI now but nothing for packet loss.  Ok, but I figured I could maybe just add it from the CLI.  Looking at the man page for ipfw I see the option is called loss-level.  Looking at ipfw.rules my existing pipe looks like this:

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pipe 10002 config bw 1Mbit/s mask dst-ip 0xffffffff  type  wf2q+  delay 50
So I figured I could do this at the command line:

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ipfw pipe 10002 config bw 1Mbit/s mask dst-ip 0xffffffff  type  wf2q+  delay 50 loss-level .1

But that gives an error:  ipfw: unrecognised option ``loss-level''

Is the IPFW that comes with OPNsense compiled without that option or something?  Any one know of a way to make this work?

Thank you,
Brad