Motorola SB6141 DOCSIS 3.0 Cable Modem, Plus N300 Wireless Router for $84.99 shipped after code EMCPEHH49.  Here is a screenshot for reference. It has IPv4 and IPv6 support and speed up to 160Mbps.  This is a relatively high-end consumer cable modem.  Having your own cable modem often means you do not have to rent one from [...]