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Get network device dicts from ip route and ip link info.
@param ipaddr_out: Output string from 'ip addr show' command.
@returns: A dict of device info keyed by network device name containing
device configuration values.
@raise: TypeError if ipaddr_out isn't a string.
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Get network route dicts from ip route info.
@param iproute_data: Output string from ip route command.
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item in the list is a route dictionary representing destination,
gateway, flags, genmask and interface information.
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