iproute2 tutorial for ifconfig, arp, route users

A lot of Linux distributions are shifting to iproute2 instead of net-tools (aka ifconfig, arp, route). The main reason being net-tools package hasn’t been updated in a decade. However having used the trusted ifconfig, route and arp for so many years, I have never bothered to use ip and hence I now need to Google every time I want to see what my IP address is!

So here’s a short iproute2 primer for net-tools users (like myself).
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