Root Hints.

Mark Andrews Mark_Andrews at isc.org
Mon Feb 4 23:00:32 UTC 2008


	The 6 of root servers now have IPv6 addresses.  You should
	be updating your hints file to reflect this change.

	You can retrieve a new set of root hint by running:

	dig +bufsize=1200 +norec NS . @a.root-servers.net > newhints

	Note: +bufsize=1200 is needed as the response will no longer
	fit in plain DNS/UDP response.

	If your version of dig does not support +bufsize= it really is
	time to upgrade.  The world is passing you by.

	If you have a firewall that doesn't allow EDNS packet bigger
	than 512 bytes through it is time to upgrade that firewall.
	In the meantime you can use a query like this to update the
	root hints.

	dig +vc +norec NS . @a.root-servers.net > newhints

	Note: this is not a long term solution.  You will get better
	performance out of your DNS servers if you upgrade.

	Mark

; <<>> DiG 9.3.4-P1 <<>> +bufsize=1200 +norec NS . @a.root-servers.net
; (2 servers found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31496
;; flags: qr aa; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 20

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;.				IN	NS

;; ANSWER SECTION:
.			518400	IN	NS	E.ROOT-SERVERS.NET.
.			518400	IN	NS	F.ROOT-SERVERS.NET.
.			518400	IN	NS	G.ROOT-SERVERS.NET.
.			518400	IN	NS	H.ROOT-SERVERS.NET.
.			518400	IN	NS	I.ROOT-SERVERS.NET.
.			518400	IN	NS	J.ROOT-SERVERS.NET.
.			518400	IN	NS	K.ROOT-SERVERS.NET.
.			518400	IN	NS	L.ROOT-SERVERS.NET.
.			518400	IN	NS	M.ROOT-SERVERS.NET.
.			518400	IN	NS	A.ROOT-SERVERS.NET.
.			518400	IN	NS	B.ROOT-SERVERS.NET.
.			518400	IN	NS	C.ROOT-SERVERS.NET.
.			518400	IN	NS	D.ROOT-SERVERS.NET.

;; ADDITIONAL SECTION:
A.ROOT-SERVERS.NET.	3600000	IN	A	198.41.0.4
A.ROOT-SERVERS.NET.	3600000	IN	AAAA	2001:503:ba3e::2:30
B.ROOT-SERVERS.NET.	3600000	IN	A	192.228.79.201
C.ROOT-SERVERS.NET.	3600000	IN	A	192.33.4.12
D.ROOT-SERVERS.NET.	3600000	IN	A	128.8.10.90
E.ROOT-SERVERS.NET.	3600000	IN	A	192.203.230.10
F.ROOT-SERVERS.NET.	3600000	IN	A	192.5.5.241
F.ROOT-SERVERS.NET.	3600000	IN	AAAA	2001:500:2f::f
G.ROOT-SERVERS.NET.	3600000	IN	A	192.112.36.4
H.ROOT-SERVERS.NET.	3600000	IN	A	128.63.2.53
H.ROOT-SERVERS.NET.	3600000	IN	AAAA	2001:500:1::803f:235
I.ROOT-SERVERS.NET.	3600000	IN	A	192.36.148.17
J.ROOT-SERVERS.NET.	3600000	IN	A	192.58.128.30
J.ROOT-SERVERS.NET.	3600000	IN	AAAA	2001:503:c27::2:30
K.ROOT-SERVERS.NET.	3600000	IN	A	193.0.14.129
K.ROOT-SERVERS.NET.	3600000	IN	AAAA	2001:7fd::1
L.ROOT-SERVERS.NET.	3600000	IN	A	199.7.83.42
M.ROOT-SERVERS.NET.	3600000	IN	A	202.12.27.33
M.ROOT-SERVERS.NET.	3600000	IN	AAAA	2001:dc3::35

;; Query time: 246 msec
;; SERVER: 2001:503:ba3e::2:30#53(2001:503:ba3e::2:30)
;; WHEN: Tue Feb  5 09:56:13 2008
;; MSG SIZE  rcvd: 615

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE:	+61 2 9871 4742		         INTERNET: Mark_Andrews at isc.org



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