How to add IP address to your menu bar on Kali
sudo apt install xfce4-genmon-plugin
add the Generic Monitor panel to your bar with Right Click > Add New Items
Create a shell script with:
ADDR=$(ip addr | grep tun0|grep inet|awk '{print $2}'|cut -d "/" -f 1)
echo "$ADDR" | sed 's/$/ /g'
set the command field in Generic Monitor to be /location/of/script.sh - I was too lazy to try to get it work all on one line in the genmon command field
in ‘Label’ field put a single space (for pretty spacing) and change font to whatever
you now have IP in your panel