[BUG] Network throughput reported by EWW_NET variables is double of the actual value

[Daxtorim]

Checklist before submitting an issue

• [X] I have searched through the existing closed and open issues for eww and made sure this is not a duplicate
• [X] I have specifically verified that this bug is not a common user error
• [X] I am providing as much relevant information as I am able to in this bug report (Minimal config to reproduce the issue for example, if applicable)

Description of the bug

The values returned by the EWW_NET magic variable is always twice and rarely even three times the real amount.

Reproducing the issue

1. Start continuously checking the EWW_NET reported download throughput in megabits per second (replace the interface in the jq command with the active one on your machine):

   while true; do eww get EWW_NET | jq '.wlp6s0.NET_DOWN' | xargs bash -c 'echo $(($0 * 8 / 1000000))' ; sleep 2; done

2. Go to https://www.speedtest.net/ and start a speedtest (or start any other network benchmark of your choice).
3. Observe the difference between what the benchmark displays and what the EWW_NET variable contains.
4. Repeat the experiment for the NET_UP value and observe the same behavior.

Expected behaviour

The values reported by EWW_NET should be close to the actual value.

Additional context

Various other applications, e.g. btop++ or KDE Plasma's network widget, measure the throughput just fine.

[NoXPhasma]

I experience the same, I have to divide the value by 2 to make proper use of it.

[Ocyss]

I am the same, I use the mt7921 network card, I don't know if it has something to do with the network card