Table B-1. BIND Compatibility Matrix

	BIND Version
Feature	4.9.7	8.1.2	8.2.3	9.1.0
Multiprocessor support				X
Dynamic update		X	X	X
TSIG-signed dynamic update			X	X
TSIG-based update policy				X
NOTIFY		X	X	X
Incremental zone transfer			X	X
Forwarding	X	X	X	X
Forward zones			X	X
Use of RTT for forwarders			X
Views				X
Round robin	X	X	X	X
Configurable RRset order			X
Configurable sort list	X		X	X
Disabling recursion	X	X	X	X
Recursion access list			X	X
IPv6 features
AAAA records	X	X	X	X
A6 records				X
DNAME records				X
Bitstring labels				X
Following DNAME and A6 chains				X
Query access lists	X[111]	X	X	X
Zone transfer access lists	X[112]	X	X	X
DNSSEC features
Loading SIG, KEY and NXT RRs			X	X
Verify "chain of trust"				X
Dynamic updating secure zones				X

[111]Via secure_zone TXT RRs

[112]Via xfrnets