I'm a newbie with linux and I have a problem I don't know how to resolve... I'm using kali linux and I needed to add the routing table to my device with this command:

[COLOR=var(--black-800)]sudo ifconfig wlan0mon up netmask[/COLOR]
[COLOR=var(--black-800)]    route add -net netmask gw[/COLOR]

I get this:

[COLOR=var(--black-800)]SIOCADDRT: Operation not permitted[/COLOR]

What can I do to unlock this command?
Thank you in advance!!