Motorola SB6141 SURFboard DOCSIS 3.0 Cable Modem for $52.99.  Shipping is $5 for a total of $57.99 shipped.  Here is a screenshot for reference. It has IPv4 and IPv6 support and speed up to 343Mbps.  This is a relatively high-end consumer cable modem and is on the approved list of major cable ISPs.  Having your [...]