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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