The value of tmnxNat64InSetTos specifies
if the IPv6 Traffic Class is ignored and the IPv4 Type Of Service (TOS)
bits set to the value specified by the object tmnxNat64InTos.
If the value of tmnxNat64InSetTos is equal to 'false', the system
copies the IPv6 Traffic Class into the IPv4 TOS.
The value of this object can only be modified while the value of
the object tmnxNat64InAdminState is equal to 'outOfService'.