Copyright (c) 2014, 2015, Martin Sundhaug All rights reserved.
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Get all function-codes active on the canbus
Get all node-ids active on the canbus
Configure a virtual CAN (vcan)-interface
Unload mcp251x, load mcp2515a, configure can0 at 125000 baud and bring it up
Unlad mcp2515a, load mcp251x, configure can0 at 125000 baud and bring it up
Start tshark capturing frames on can0, saving to ~/capture/can0-$(date +%s).pcap