This read-create BITS value selects which MAC and IP address fields a basic flow template matches on, with bit positions for sourceIpv4Address, destIPv4Address, sourceIPv6Address, destIPv6Address, sourceMacAddress, and destMacAddress. An admin sets the relevant bits to build a match condition combining, say, source and destination IPv4 addresses. For example, an admin building a template that classifies by source and destination IPv4 address would set both the sourceIpv4Address(0) and destIPv4Address(1) bits in hh3cFTBasicGroupAddressType.