Doug Vitale Tech Blog runs a post with a collection of the deprecated Linux networking commands and their replacements. Pretty handy if you want update some of your old bash scripts.
Deprecated command Replacement command(s) arp ip n (ip neighbor) ifconfig ip a (ip addr), ip link, ip -s (ip -stats) iptunnel ip tunnel iwconfig iw nameif ip link, ifrename netstat ss, ip route (for netstat-r), ip -s link (for netstat -i), ip maddr (for netstat-g) route ip r (ip route)