Setting this attribute to True(1) will force this interface to
use Auto Negotiation to determine interface speed and duplexity.
When set in this mode, the values of acEnetCfgSpeed and
acEnetCfgDuplexity will be ignored. The interface shall advertise
the ability to run at 10M and 100M, and will advertise both half
and full duplex capabilities. When this attribute is set to False(0),
the interface will be configured according to the values in the
acEnetCfgSpeed and acEnetCfgDuplexity attributes.