Other features

(This chapter is out-of-scope in this document, just the summary here)

Inverse resolution : Address -> HostName

Example :

74.100.159.157.in-addr.arpa. 172800 IN  PTR     ipv6-1.int-evry.fr.
ipv6-1.int-evry.fr.     172800  IN      A       157.159.100.74

3.8.c.2.a.3.e.f.f.f.0.d.0.b.2.0.0.0.0.1.3.0.2.3.0.6.6.0.1.0.0.2.ip6.arpa. (
                          86400 IN PTR zeratul.ipv6.int-evry.fr. )
zeratul.ipv6.int-evry.fr. 86400 IN      AAAA    2001:660:3203:1000:2b0:d0ff:fe3a:2c83

Wildcard

Security Extensions, DNSSEC (RFC4033,RFC4034,RFC4035)

Public keys Publishing
DNS transaction Authentication (RFC2845,RFC2930,RFC2931)
DNS Data Authentication and Integrity

Some other standard or not standard DNS extensions

Load Balancing(RFC1794)
Incremental Transfer (RFC1995)
Notification (RFC1996)
Negative Cache(RFC2308)
DNS Dynamic Update (RFC2136,RFC3007)
Extensibility Mechanisms (EDNS0) (RFC2671)
Internationalisation (IDN) (RFC3490,RFC3491,RFC3492)
IPv6 integration (RFC3596)
New RR Types : IPSECKEY, SSHFP, DHCID, HIP,...

Split DNS and Firewall
Access lists, view point
..........

Conclusions ?

"The DNS Today Are we Overloading the Saddlebags on an Old Horse?", Randy Bush, IETF45, San-diego 2000.