Making changes with ifconfig persistent : <p>can anyone tell me on how to make the following commandline changes persistent? (Like via /etc/network/interfaces or /etc/dhcpcd.conf)</p>

<pre><code>route del default
ifconfig eth0 add 172.25.1.1 netmask 255.240.0.0
ifconfig eth0:0 netmask 255.240.0.0
route del default
route add default gw 172.25.0.1
</code></pre>

<p>I need to make these changes to make this RPI use a Router as a default gateway a room next to ours.
For more info: We don't have direct access to this Router, as in we can't make any changes to it by ourselves.</p>

<p>Am thankful for any insightful responses.</p>
