[GRLUG] Cable modems

[Mark Farver]

Some guesses:  the modem is refusing to give out a second DHCP and
something didn't work when you cloned the MAC.  Reboot the modem leaving it
powered off for at least 30 seconds when moving the cable from machine to
machine.

The modem utilizes something like PPPoE (rare on cable systems)

Your machine is trying to pull something IPV6 related and the modem doesn't
like that.  Snoop the connection between the router and modem with a dumb
hub and wireshark.  Look for any differences between laptop and router.
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