The value of tmnxOspfNgIfLoopfreeAltExclude specifies whether or not
the OSPF interface should be excluded during LFA calculations. If the
value is 'true', the OSPF interface is excluded from LFA calculations.
If the value is 'false', the OSPF interface is included in LFA
calculations.
The value of tmnxOspfNgIfLoopfreeAltExclude is only valid when
tmnxOspfLoopfreeAlternate has a value of 'true'.