Run ifconfig without sudo

If any non root user would be trusted to do so, you can merely add a setuid flag on ifconfig exec:

chmod 4755 /sbin/ifconfig

It will grant root privilege for execution of this executable to anyone. Of course, you need to have root access to run the chmod.

You don't need to use sudo to run the ifconfig command, just make sure that the /sbin is on your PATH .

as an unprivileged user run:

export PATH=$PATH:/sbin
ifconfig